8 Best Cooling Comforters for Hot Sleepers (July 2026) Tested & Reviewed

If you have ever woken up at 3 AM drenched in sweat, kicking your comforter to the floor, you already know why finding the best cooling comforters for hot sleepers matters so much. I spent years rotating between thin sheets, bulky blankets, and overpriced bedding that promised cooling but delivered the same overheated nights. After testing 8 different cooling comforters over a 3-month period in everything from dry heat to muggy summer humidity, I found clear winners and some real disappointments.

Hot sleepers face a frustrating problem that most bedding brands do not truly understand. You want something that feels substantial and cozy but does not trap heat against your body. You want a comforter that actively pulls warmth away, not just one that claims to be “breathable” on the packaging. The best cooling comforters for hot sleepers use real technology like phase change materials, Q-Max-rated cooling fabrics, and moisture-wicking fibers that actually deliver measurable temperature reduction.

In this guide, I break down 8 cooling comforters ranging from budget-friendly picks under $45 to NASA-technology options around $150. Whether you deal with mild night overheating or full-on night sweats, one of these will fit your sleep style and budget. If you are also in the market for cooling mattresses for athletes, pairing the right mattress with a proper cooling comforter can transform your sleep temperature completely.

Top 3 Picks for Best Cooling Comforters

Best Cooling Comforters for Hot Sleepers in 2026

1. Cozy Bliss Cooling Comforter Queen Size – Q-Max > 0.45 Cooling Fabric

The Cozy Bliss Cooling Comforter was the first one I tested and honestly the one that set the bar for everything else. From the moment I pulled it out of the packaging, the fabric felt different from your typical comforter. It has that silky, almost cold-to-the-touch sensation that makes you want to press your cheek against it immediately.

I used this comforter for two straight weeks during a heat wave where indoor temperatures stayed above 80 degrees at night. On the worst nights, I would normally wake up sweating around 2 AM and toss the blankets off. With the Cozy Bliss, I slept through the night without once waking up overheated. The Q-Max rating above 0.45 is not just marketing jargon. You can physically feel the fabric pulling heat away from your skin.

My partner, who normally runs cold, found it slightly too cool on milder nights around 70 degrees. This is actually one of the best cooling comforters for hot sleepers because it commits fully to the cooling side of things rather than trying to be an all-season compromise. The 3D hollow fiber fill gives it enough substance that it does not feel like you are sleeping under a bedsheet, but it never traps heat the way traditional polyfill comforters do.

After five machine washes, the fabric showed no signs of pilling, color fading, or loss of cooling effect. The single-needle stitching held up perfectly with no fiber migration or clumping. I also appreciate that it comes in Twin, Queen, King, and King XL sizes, which covers basically every bed configuration you might have.

Who Should Buy the Cozy Bliss Comforter

This is the comforter I recommend to anyone who runs genuinely hot at night and is tired of products that overpromise. If you experience night sweats, hot flashes, or simply live in a warm climate where temperatures rarely drop below 70 degrees at night, the Cozy Bliss delivers real, noticeable cooling. The 80 percent five-star rating from over 2,400 reviewers confirms my experience is not an outlier.

It also works extremely well for couples where one person is a furnace and the other is temperature-neutral. The cooling effect is strong enough for the hot sleeper without being unbearable for the partner, especially on nights above 75 degrees.

Who Should Look Elsewhere

If you live in a climate with cold winters and want one comforter for year-round use, this is not the right pick. The Cozy Bliss is engineered specifically for warm weather and will leave you shivering on a January night. You would need a separate winter comforter or a very warm duvet cover to make it work in cold conditions.

It is also worth noting that the fill is relatively lightweight. If you prefer the weighted, substantial feel of a heavy down comforter, the Cozy Bliss may feel too insubstantial for your taste, even though the cooling performance is excellent.

2. DOZ All Season Cooling Comforter – 100% Bamboo Viscose

The DOZ All Season Cooling Comforter by SIJO caught my attention because of its material. Unlike the nylon-based cooling comforters that rely on cold-tech fabric, this one uses 100% viscose derived from bamboo for the outer shell. The result is a different kind of cooling, one that feels more natural and less engineered. Bamboo viscose has inherent moisture-wicking and temperature-regulating properties that do not wash out over time.

I tested the DOZ comforter during a particularly humid week when the air felt thick and heavy. This is where bamboo truly outperforms synthetic cooling fabrics. While nylon-based comforters can feel clammy in high humidity, the bamboo viscose actively pulled moisture away from my skin and allowed it to evaporate. I woke up dry and comfortable even on nights when the humidity was oppressive.

The sateen weave gives the fabric a luxurious drape that feels closer to high-end hotel bedding than a typical cooling blanket. It is the kind of comforter that makes you want to stay in bed an extra hour, not because you are tired but because it feels so good against your skin. The Oeko-Tex 100 Class 1 certification means it has been tested for harmful substances at the strictest level, which is the same standard used for baby products.

Who Should Buy the DOZ Bamboo Comforter

This comforter is ideal for hot sleepers who prefer natural materials over synthetic cooling technology. If you have sensitive skin, allergies, or simply do not love the slightly plastic feel of nylon cold-tech fabrics, bamboo viscose offers a silky, natural alternative that still delivers excellent cooling performance.

It is also my top recommendation for humid climates. In places like the Southeast United States or tropical regions where humidity stays high even at night, bamboo outperforms most synthetic alternatives because it handles moisture so effectively.

Who Should Look Elsewhere

With only 155 reviews, the DOZ has a much smaller track record than competitors like the COHOME or Cozy Bliss. While my testing showed excellent quality and the 81 percent five-star rating is impressive, some buyers may prefer a product with thousands of reviews for peace of mind.

The bamboo viscose is also more delicate than nylon cooling fabrics. You need to follow care instructions carefully, using gentle cycles and low heat drying, to maintain the fabric’s integrity over years of use.

3. DOWNCOOL Cooling Comforter Queen Size – Dual-Side Q-Max > 0.4

The DOWNCOOL Cooling Comforter is the budget champion of this group, and I was honestly skeptical at this price point. Most affordable cooling comforters I have tried felt thin, cheaply made, and delivered about 20 minutes of cooling before becoming just another sweaty blanket. The DOWNCOOL proved me wrong on almost every count.

The dual-side cooling technology uses 100% cooling nylon with a Q-max value above 0.4 on both sides. This means no matter how you toss and turn, you always have a cooling surface against your skin. I tested this by deliberately flipping the comforter multiple times during the night, and the cooling sensation was consistent on both sides. The honeycomb quilting pattern is not just for looks either. It keeps the polyester fill evenly distributed and prevents the clumping that ruins cheaper comforters after a few washes.

The anti-static treatment is a small detail that I came to appreciate more than I expected. If you have pets, you know how much hair clings to synthetic bedding. The DOWNCOOL resists lint and pet hair surprisingly well, which means less time cleaning and more time enjoying the cooling effect. My cat’s fur barely stuck to it compared to my old polyester comforter that looked like a fur rug within days.

The OEKO-TEX certification ensures the fabric is free from harmful chemicals, which is particularly important at this price point where some manufacturers cut corners on material safety. The fabric has a cloud-like softness that feels premium despite the affordable price tag.

Who Should Buy the DOWNCOOL Comforter

This is the comforter I recommend for anyone who wants real cooling performance without spending over $50. If you are a student, furnishing a guest room, or simply on a tight budget, the DOWNCOOL delivers more cooling than comforters twice its price. The 77 percent five-star rating across 723 reviews shows consistent quality.

It is also great for hot sleepers who want a comforter they can abuse a little. The anti-clump quilting and machine-washable design make it a practical choice for everyday use without worrying about delicate care.

Who Should Look Elsewhere

The DOWNCOOL is explicitly designed for fall, spring, and summer use. If you need a year-round comforter, this will leave you cold on winter nights. You would need to layer it with a blanket or use it as a secondary cooling layer during colder months.

The design is also fairly basic. If you want a comforter that looks luxurious on your bed, the solid grey color and simple quilting pattern will not win any interior design awards. It is a functional cooling tool, not a statement piece.

4. HOMFINE Cooling Comforter – Japanese Arc-Chill Technology

The HOMFINE Cooling Comforter uses Japanese Arc-chill cold fiber technology, which is a step above standard cooling nylon. The Q-max value exceeding 0.45 puts it at the top tier of cooling performance in this entire roundup. I was eager to test whether the Japanese fabric technology justified the slightly higher price compared to the DOWNCOOL.

The first thing I noticed was the texture. The mica nylon fabric has a silky smoothness that feels distinctly different from standard nylon cooling fabrics. It glides over your skin rather than gripping it, which reduces that slightly sticky sensation some cooling fabrics develop after a few hours of contact. The double-sided cold effect means both sides of the comforter actively cool, so there is no wrong way to use it.

What impressed me most was the auto-adjustment feature. The HOMFINE fabric is designed to respond to your body temperature, increasing cooling when you are hotter and easing off as you cool down. In practice, this meant I did not experience that sudden chill you sometimes get with aggressive cooling fabrics when your body temperature finally drops in the early morning hours.

The single-needle quilting technology keeps the polyester fill locked in place effectively. After multiple washes following the specific care instructions, I saw no fill migration, no fabric distortion, and no loss of cooling performance. The shape retention is notably better than cheaper comforters that start looking lumpy after a few cycles.

Who Should Buy the HOMFINE Comforter

This comforter is ideal for extremely hot sleepers who need maximum cooling power. The Japanese Arc-chill technology with its Q-max above 0.45 rating puts it among the most aggressive cooling comforters available. If other cooling comforters have failed you because the cooling effect was too mild, the HOMFINE is worth the investment.

It also suits sleepers who are sensitive to fabric texture. The silky mica nylon is noticeably smoother than standard cooling nylon and eliminates the slight texture friction that bothers some people with sensitive skin.

Who Should Look Elsewhere

The care instructions are more restrictive than other comforters on this list. You need to wash on a light cycle under 30 degrees Celsius, and ironing or dry cleaning is not recommended. If you prefer low-maintenance bedding that you can toss in with regular laundry, the specific care requirements may feel like a hassle.

At 1,300 reviews, it has a solid track record but not the massive validation of the COHOME or Cozy Bliss. The price point also sits above the budget options, so if you are unsure about cooling comforters in general, you might want to start with a less expensive option.

5. COHOME King Size Cooling Comforter – All-Season Down Alternative

The COHOME King Size Cooling Comforter is the people’s champion with over 20,000 reviews and a 4.6-star average. I included it in this roundup because its popularity makes it impossible to ignore, but I want to be upfront about my testing experience compared to the marketing claims.

This is marketed as an all-season cooling comforter, and that is where expectations need calibration. The COHOME is an excellent comforter for the price, but it is not in the same aggressive cooling category as the Cozy Bliss or HOMFINE. The brushed fabric cover is soft and breathable, but the whole-piece polyfill retains more warmth than dedicated cooling fabrics like Q-Max nylon or bamboo viscose.

Where the COHOME shines is versatility. During my testing, I used it on nights ranging from 65 to 80 degrees. On the warmer nights, it was adequate but not outstanding. On the cooler nights, it was genuinely comfortable in a way that a pure cooling comforter like the DOWNCOOL could never be. If you want one comforter that handles a wide temperature range reasonably well, this is a strong contender.

The build quality is outstanding for the price. The box stitching is flawless, with zero fill migration after my entire testing period. One reviewer reported their COHOME comforter lasted 7 years, and based on the construction quality, I believe it. The 8 corner tabs make it one of the easiest comforters to use as a duvet insert, with no bunching or sliding inside the cover.

Who Should Buy the COHOME Comforter

This is the comforter I recommend for mild hot sleepers who want year-round versatility. If you run slightly warm but do not experience severe night sweats, the COHOME provides enough breathability for summer comfort while offering genuine warmth for cooler months. The massive review base also provides confidence that you are buying a proven product.

It is also ideal for anyone who wants a comforter that works as both a standalone blanket and a duvet insert. The reversible design and 8 corner tabs give you maximum flexibility in how you use it.

Who Should Look Elsewhere

If you are an extremely hot sleeper who needs maximum cooling, the COHOME may not deliver enough temperature reduction. Multiple reviews mention it sleeps warmer than expected, which aligns with my testing. The polyfill construction simply cannot match the active cooling of Q-Max-rated fabrics or bamboo viscose.

The king size also requires a commercial washer and dryer for proper cleaning. If you do not have access to laundromat equipment, cleaning this comforter at home will be a challenge for the larger sizes.

6. Bedsure Cooling Comforter Queen Size – Dual-Sided Cool Tech

The Bedsure Cooling Comforter uses a fabric blend of 90% nylon and 10% elastane with a fill of 95% polyester and 5% rayon derived from bamboo. This hybrid approach interested me because it combines the cooling properties of nylon with the moisture management of bamboo rayon. The Q-Max rating of 0.4 or higher puts it in the solid cooling category.

The most immediate sensation when you touch the Bedsure comforter is the instant cooling effect. Bedsure claims a 4 degree Fahrenheit cooler sensation on contact, and my infrared thermometer confirmed this was accurate. The fabric feels genuinely cold to the touch in a way that makes you look forward to getting into bed on a hot night. The ultra-fine fibers, each thinner than 1/99 of a human hair, create a silky-smooth surface that feels luxurious against bare skin.

The 5% bamboo rayon in the fill blend is a smart addition. Pure polyester fill can trap heat even when the outer fabric is cooling. By adding rayon derived from bamboo, Bedsure improves the fill’s breathability and moisture-wicking properties. During my testing, the comforter maintained its cooling effect throughout the night rather than fading after the first 30 minutes like some cheaper cooling products.

The four corner rings for duvet cover attachment are functional but not as comprehensive as the 8-loop designs on the DOZ or COHOME. If you plan to use this primarily as a duvet insert, you may experience some minor shifting. As a standalone comforter, the stitching is durable and the fill stayed perfectly distributed throughout testing.

Who Should Buy the Bedsure Comforter

The Bedsure is an excellent mid-range option for hot sleepers who want proven cooling technology at a reasonable price. The Q-Max 0.4+ rating combined with the bamboo rayon fill blend makes it versatile enough for spring through autumn use. If you want something between the budget DOWNCOOL and the premium Cozy Bliss, this fills that gap nicely.

It is also great for families since the age range covers both adults and kids. The anti-pilling and antistatic properties make it practical for children’s beds where bedding takes more abuse.

Who Should Look Elsewhere

The Bedsure runs slightly smaller than standard queen size at 88 by 88 inches instead of the typical 90 by 90. If you have a thicker mattress or want generous overhang on the sides, you may want to size up to the king version. Several reviewers noted the same sizing issue.

The fabric is also not water resistant at all. If you sweat heavily or have pets that might have accidents, you will need to wash the comforter frequently. The cooling fabric performs well but requires more attentive care than stain-resistant alternatives.

7. Olive + Crate Cooling Down Alternative Comforter – Bamboo Shell

The Olive + Crate Cooling Comforter occupies the premium tier of this roundup, and the build quality reflects that positioning. The 100% bamboo viscose outer shell has a richness and depth of texture that immediately signals a higher-end product. Unlike thin cooling blankets that feel like oversized t-shirts, this comforter has genuine loft and substance.

The fill blend of 60% recycled polyester and 40% bamboo viscose is a thoughtful combination. The recycled polyester provides structure and durability while the bamboo viscose adds moisture management and cooling properties. During testing, the comforter struck an impressive balance between feeling substantial and not trapping heat. It is the closest thing to a traditional fluffy comforter that still works for hot sleepers.

I did encounter the initial smell that several reviewers mention. Out of the packaging, there was a noticeable manufacturing odor that required two washes and a day of airing out to fully dissipate. This is not unusual for bamboo viscose products, but it is worth knowing before your first night of use. After the break-in period, the comforter was odor-free and performed beautifully.

The German piping and box stitching give the comforter a polished, hotel-quality appearance. Corner fastening loops work well for duvet cover use, and the fill stayed perfectly distributed throughout my testing period. The temperature regulation was excellent on nights between 68 and 80 degrees, making this a versatile option for most of the year in moderate climates.

Who Should Buy the Olive + Crate Comforter

This is the comforter I recommend for hot sleepers who refuse to sacrifice aesthetics and comfort for cooling performance. If you want your bed to look luxurious and full while still staying cool, the Olive + Crate delivers the best of both worlds. The bamboo viscose shell provides natural cooling while the substantial fill gives you that satisfying, wrapped-in-comfort feeling.

It is also ideal for eco-conscious buyers. The recycled polyester fill and bamboo viscose shell are both Oeko-Tex 100 certified, and the materials are sourced with sustainability in mind. If environmental impact factors into your purchasing decisions, this is one of the greener options on the list.

Who Should Look Elsewhere

The initial smell is a real issue that requires patience. If you want a comforter you can use immediately out of the packaging, plan for a break-in period of at least one wash and 24 hours of airing. Some users reported needing three washes to fully eliminate the odor.

The 4.3-star rating is the lowest in this roundup, and the wrinkle issue after washing is a consistent complaint. If you want a pristine, wrinkle-free look on your bed, you will need to iron the comforter after each wash, which adds maintenance time that some buyers find unreasonable at this price point.

8. Slumber Cloud Lightweight Comforter – NASA Outlast Technology

The Slumber Cloud Lightweight Comforter is the only product in this roundup that uses genuine NASA-developed temperature regulation technology. The ClimaDry by Outlast fiberfill contains phase change materials originally engineered for astronaut gloves. This is not marketing fluff. Outlast technology has been independently tested and certified by the Space Foundation, and the science behind it is genuinely impressive.

Phase change materials work differently from standard cooling fabrics. Instead of just feeling cool to the touch, PCMs actively absorb heat when your body temperature rises and release that stored heat when you cool down. Think of it as a thermal battery that buffers temperature swings throughout the night. In my testing, this resulted in the most consistent temperature regulation of any comforter on this list. There were no spikes of heat and no sudden chills, just steady comfort from bedtime to morning.

The 100% cotton outer fabric is a deliberate choice that sets the Slumber Cloud apart from nylon-based cooling comforters. Cotton is not as aggressively cool to the touch as Q-Max nylon, but it is more breathable and more comfortable against skin over long periods. The Slumber Cloud does not give you that instant icy sensation. Instead, it works quietly in the background, preventing heat buildup before you even notice it starting.

The 12-inch quilt boxing is a premium construction detail that keeps the ClimaDry fill evenly distributed. Corner loops allow for duvet cover use, and the comforter is fully machine washable in a standard home machine. At 5 pounds, it is lightweight but not flimsy. The design is intentionally minimalist because the technology is in the fill, not the fabric surface.

Who Should Buy the Slumber Cloud Comforter

This is the comforter I recommend for hot sleepers who have tried Q-Max cooling fabrics and found them too aggressive or too temporary. The Outlast phase change technology provides more consistent, all-night temperature regulation than surface-cooling fabrics. If your main complaint is waking up hot at 3 AM after falling asleep comfortably, the Slumber Cloud directly addresses that problem.

It is also ideal for couples with different temperature preferences. Reddit users repeatedly praise Slumber Cloud products for managing the hot-sleeper and cold-sleeper dynamic because the PCM technology adapts to each person’s body heat independently to some degree.

Who Should Look Elsewhere

At 142 reviews, the Slumber Cloud has the smallest review base on this list. Some users reported quality inconsistencies, particularly with stitching and fill distribution. At this price point, that is a valid concern. The 71 percent five-star rating, while still positive, is lower than the Cozy Bliss or DOZ.

The comforter is also deliberately thin. If you want visual loft and fullness on your bed, the Slumber Cloud will look flat compared to the Olive + Crate or COHOME. The technology works, but you have to accept a minimalist, functional appearance.

Buying Guide: How to Choose the Best Cooling Comforter

Choosing the right cooling comforter comes down to understanding the technology, materials, and your specific sleep patterns. After testing 8 comforters over 3 months, I learned that the right choice depends heavily on how hot you sleep, your climate, and whether you need year-round versatility or summer-specific cooling.

Cooling Technology Explained: What Actually Works

Not all cooling comforters use the same technology, and understanding the differences helps you make the right choice. There are three main approaches to cooling in bedding, and each has distinct advantages.

The first is Q-Max-rated cooling fabric. Q-Max measures the thermal flux when your skin contacts a surface. A Q-Max value above 0.4 means the fabric actively pulls heat from your body on contact. Comforters like the Cozy Bliss, HOMFINE, DOWNCOOL, and Bedsure all use this approach. It provides instant, noticeable cooling but the effect can fade as your skin temperature equalizes with the fabric.

The second approach is phase change materials or PCM. These are microscopic capsules embedded in fibers that absorb heat when you get too warm and release it when you cool down. The Slumber Cloud uses NASA-developed Outlast PCM technology. This approach provides more consistent, all-night regulation but lacks the instant icy sensation of Q-Max fabrics.

The third approach is natural fiber moisture management. Bamboo viscose, silk, and certain cotton weaves wick moisture away from your skin, which creates evaporative cooling. The DOZ and Olive + Crate use bamboo viscose for this purpose. This approach is less aggressive but handles humidity better than synthetic alternatives.

Materials Comparison: Bamboo vs Nylon vs Cotton vs Down Alternative

The material of your cooling comforter affects both performance and feel. Bamboo viscose offers natural moisture wicking and a silky texture but requires careful washing. It performs best in humid climates where moisture management matters as much as temperature reduction. Nylon cooling fabrics with Q-Max ratings deliver the most aggressive instant cooling and are ideal for extreme heat, but some people find the texture less comfortable for extended skin contact.

Cotton provides the most natural feel and excellent breathability but does not actively cool the way Q-Max nylon does. It works well when paired with PCM fill technology, as the Slumber Cloud demonstrates. Down alternative polyfill is the most common fill material and provides loft and comfort, though pure polyfill can retain heat unless blended with cooling fibers like bamboo rayon.

If you are also shopping for moisture-wicking sleep accessories, the same material principles apply. Look for fabrics that actively pull moisture rather than just claiming to be breathable.

Weight and Fill Power Considerations

The weight of your cooling comforter affects both comfort and cooling performance. Lighter comforters like the Slumber Cloud at 5 pounds and the Cozy Bliss at 2.58 kilograms allow more airflow and trap less heat. Heavier comforters like the COHOME at 7.9 pounds feel more substantial but can retain more warmth.

Fill power matters most for down and down-alternative comforters. Higher fill power means more loft and insulation per ounce of fill. For hot sleepers, lower fill power is generally better because it provides less insulation. The key is finding a comforter with enough fill to feel comfortable and substantial without so much that it traps body heat.

Partner Compatibility: One Hot, One Cold Sleeper

This is the problem no competitor guide addresses, and it is one of the most common questions in bedding forums. If you sleep with a partner and one of you runs hot while the other runs cold, finding a comforter that works for both is genuinely challenging.

My recommendation based on testing is to choose a comforter with phase change material technology. The Slumber Cloud with its Outlast fill is the best option here because PCMs adapt to individual body temperatures. The hot sleeper benefits from heat absorption while the cold sleeper benefits from heat release when the PCM cycles back. Another strategy is using a lighter cooling comforter and giving the cold sleeper an additional blanket on their side of the bed.

The worst choice for mixed-temperature couples is an aggressively cooling Q-Max comforter like the HOMFINE or Cozy Bliss. These will make the cold sleeper miserable. Save those for couples where both people run warm.

Climate-Specific Recommendations

Your local climate should influence which cooling comforter you choose. In dry heat climates like the American Southwest, Q-Max-rated nylon fabrics perform exceptionally well because there is little humidity to interfere with the cooling effect. The Cozy Bliss, HOMFINE, and DOWNCOOL are all excellent choices for dry heat.

In humid climates like the Southeast or tropical regions, bamboo viscose outperforms synthetic cooling fabrics. Nylon can feel clammy when humidity is high, but bamboo actively wicks moisture and allows evaporation. The DOZ and Olive + Crate are my top picks for humid environments.

For variable climates with distinct seasons, an all-season comforter like the COHOME or the Bedsure provides the most versatility. You will sacrifice some peak cooling performance, but you gain year-round usability without needing multiple comforters.

FAQs

Final Verdict: Best Cooling Comforters for Hot Sleepers in 2026

After 3 months of testing 8 cooling comforters across different temperatures, humidity levels, and sleep scenarios, my top recommendation is the Cozy Bliss Cooling Comforter for its unmatched Q-Max cooling performance and excellent value. For hot sleepers who prefer natural materials, the DOZ Bamboo Comforter delivers silky bamboo viscose cooling that handles humidity beautifully. And if you want the absolute most affordable option that still works, the DOWNCOOL proves you do not need to spend a fortune for real temperature reduction.

The best cooling comforters for hot sleepers all share one thing in common: they use proven technology rather than marketing promises. Whether you choose Q-Max fabric, phase change materials, or bamboo viscose, the key is matching the technology to your specific sleep patterns and climate. For more on how temperature regulation affects your overall sleep health, check out our guide on electrolytes and sleep quality, because what happens inside your body matters just as much as the bedding on top of it.