Up to -20% Free Shipping & Extended Holiday Returns

Performance Cotton Comforter

Reduces Night Sweats Up To 50% Perfect For Couples Machine Washable

Your new everyday comforter. Ideal for keeping your nights cooler, but still warm enough for cozy winters. With NASA-approved temperature regulating technology this is perfect for those want a blend of classic cotton with advanced fiberfill. 

 

- Hypoallergenic, patented ClimaDry™ by Outlast fiberfill provides a down-like feel while regulating heat and moisture as you sleep

- Two fill weights to choose from: Lightweight for hot sleepers or All Season for those who want more loft and weight.

- Corner loops to keep it in place is used as a duvet insert

- OEKO-TEX® STANDARD 100 Certified Technology. Certification Number: SH025 151577 TESTEX

- 300 thread count 100% cotton outer fabric

- 50% Outlast® ClimaDry polyester fiberfill / 50% polyester fiberfill

- 6'' box quilt stitch

Full / Queen - 90" x 98"
King / Cal-King - 108" x 98"

*For Cal-King mattresses simply rotate the comforter 90º

Basic Care:
Machine wash cold water on a gentle cycle with a mild detergent and with like colors only. Do not use fabric softener. Only use non-chlorine bleach when needed. Tumble dry low heat until completely dry. Remove from dryer immediately. Do not dry clean. Do not iron.

Pro Tip:
Wash this every 1-3 months. Reduce wrinkles by removing these from the dryer immediately. Expect slight shrinkage after the first couple of washes.

Free Shipping: All U.S. orders are shipped right to your door, free of charge. Orders are typically shipped within 24 business hours.

Extended Holiday Risk Free Trial: Sleep on it, wash it, and really put it to the test until February 28th, 2026! If you don’t love your new bedding, just return it for a full refund. No questions asked!

Price Matches: Buy any Slumber Cloud item now. If it goes on a deeper sale within the next 60 days, just let us know and we'll refund the difference.

*Final Sale items and colors are not eligible for return, exchange, or the 60 Night Trial Period.

Performance Cotton Comforter
On Sale from $191.20
Why You'll Love It:
Your Everyday Comforter

Year-Round Comfort

The comforter adapts to individual sleep temperatures, solving thermal incompatibility. It adjusts for ideal comfort, ensuring both partners sleep soundly.

Versatile Design

The comforter doubles as a bed cover and duvet insert. It features 4 corner loops for attaching to a duvet cover or can be used without one.

Supreme Breathability

The comforter's 300 thread count, 100% cotton outer cover allows breathability and prevents heat buildup.
A better night’s sleep because of science.
It’s a fabric designed for NASA spacesuits up where temperatures change by 500 degrees. We think it can handle your bedroom.

The Only NASA Bedding

Our bedding utilizes Outlast®, the world’s only textile technology to have received the Certified Space Technology™ quality mark by the renowned Space Foundation.

Reduces Sweat By 50%

Our bedding provides proactive heat and moisture management, clinically proven to reduce night sweats by up to 50%.
Slumber Cloud icon of a sleep mask.

Improves Deep Sleep By 20%

Our bedding adapts to the ideal temperature of both hot and cold sleepers, proven to decrease tossing & turning and increase sleep efficiency by 20%.
"My husband has been sleeping so much better, no tossing and turning because of being to hot, so I sleep better"
- Nancy B.
"I just love our new light comforter! My hubbie likes it too because its warm enough for him and not too warm for me!"
- Tamela H.

Compare Our Products

Find the perfect solution for your needs

Performance Cotton Comforter

Performance Cotton Comforter

Airy Breathable Cotton + Cooling Tech

Lightweight Fabric
Square Quilting Pattern
Recommend to use With a Duvet Cover
UltraCool Comforter

UltraCool Comforter

Cool-To-The-Touch Outer Fabric + Cooling Fill

Mid-Weight Fabric
Diamond Quilting Pattern
Recommend to use Without a Duvet Cover
Textured Blanket - Final Sale

Textured Blanket - Final Sale

Eye-Catching Textured Design + Cooling Tech

Lightweight Fabric
Square Quilting Pattern
Recommend to use Without a Duvet Cover
Performance Cotton Comforter UltraCool Comforter Textured Blanket - Final Sale
Outer Fabric
100% Cotton Cooling Nylon 100% Textured Polyester
Fiber Fill
50% Outlast® ClimaDry polyester fiberfill / 50% polyester fiberfill 50% Outlast® ClimaDry polyester fiberfill / 50% polyester fiberfill 50% Outlast® ClimaDry polyester fiberfill / 50% polyester fiberfill
Colors
White White, Navy, & Sand Lunar & Pewter
Weight Options
Lightweight & All-Season Lightweight & All-Season Lightweight
Outlast® PCM Technology
Our Products

Outlast® PCM Technology

Proactive temperature management

Balances fluctuations in temperature
Phase change Materials
Moisture-Wicking Fabrics
Brands Like Buffy & Cozy Earth

Moisture-Wicking Fabrics

Reactive Cooling

Works after sweat is produced
Bamboo, Eucalyptus, & Lyocell
Traditional Fabrics
Brands Like Parachute & Boll & Branch

Traditional Fabrics

Traps Heat & Moisture

Can cause overheating
Variety of weaves & hand feel
Us Moisture-Wicking Fabrics Traditional Fabrics
Prevents Sweat Build-Up
Manages Hot & Cold Sleepers' Needs
Cool To The Touch
Exceptional Moderate Poor

FAQs

Definitely! When you sleep hot but your partner sleeps cold we refer to this as being “thermally incompatible”. Our bedding is designed to automatically adjust to each sleeper’s ideal sleep temperature. With the unique ability to react to each sleeper's temperature independently, our bedding ensures that both you and your partner will sleep comfortably all night long.

Our comforters are designed to regulate your temperature even when placed inside a duvet cover. Feel free to use a duvet cover to get the finished look you are after as it will not have a drastic impact on the overall performance. However, we do recommend the Essential Duvet Cover for an added layer of Outlast® temperature-regulation and breathability.

Although all three comforter options are designed to help you sleep cooler and more comfortable, it's important to choose the version that best suits your sleeping needs. Below is a quick overview of each option to help you in this decision making:

UltraCool Comforter: A more traditional weight, the UltraCool Comforter pairs Outlast® temperature-regulation fiberfill with silky smooth outer fabric that is made of cooling nylon and spandex. The UltraCool Comforter is designed with 300 gsm fill weight – that of a traditional 3-season comforter but without the traditional heat build up. This comforter is the ideal choice for year-round use.

Lightweight Comforter: Our most popular comforter, the Lightweight Comforter uses Outlast® temperature-regulation fiberfill to regulate heat and humidity build up. Our thinnest option, this is best suited for "hot" sleepers who still want a little bit of weight on top of them.

Comforter: A twist on a classic comforter, this 3-season Comforter uses Outlast® temperature-regulation fiberfill to regulate heat and humidity build up. With a higher fillweight than the Lightweight Comforter the Comforter is ideal for those who need more of a 3-season weight or who prefer a bit more loft.

The difference between the two comforter weights is the amount of filling. The Lightweight option is significantly lighter & thinner at about 1/4th'' thick, and is the best option for hot sleepers.

The All Season Comforter is more of a three season weight, and for those who prefer a bit more loft & thickness at about 2''. Both of the comforters are filled with Outlast technology to assist with keeping you cool with proactive heat management.

Over 30,000 happy sleepers have spoken

We've helped over 30,000 sleepers unlock their best rest yet. See why customers and the press are calling our products a dream come true. Read all reviews

These sheets and duvet cover are so comfy and cozy! They really do keep me cooler at nights too; which I've been fighting with my entire life - I'm an overheater! I already recommended them to my best friend.
— Kristi M.
Perfect for California Summer! I love the lightweight and how well it regulates heat, so that we are not hot nor cold. It is perfection. I was hesitant because of the cost but glad that I decided to purchase it
— Esther B.
I have bought countless pillows, new bed, different positions, tried couch, bought new couch. Got this ultra cool pillow, so soft, literally feels like sleeping on a nice cool cloud. Slept the full night, first full night in over a year.
— Sagar J.
"For truly hot sleepers, leave it to NASA engineering to figure out a way to help you finally stay cool at night."
Real Simple
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