Up to -50% Final Sale

Essential Sheet Set - Final Sale

NASA Cooling Technology Cotton Hand Feel Breathable Fabric
This item is not eligible for return, exchange, or the 60 Night Trial

Airy, breathable, and perfectly weighted, our Essential Sheet Set combines the soft durability of cotton with the performance of temperature-regulating fibers. Put an end to overheating and humidity build-up for maximum sleep comfort. The bedroom staple that stays cool, comfortable, and supremely soft.

 

- Patented Outlast® fibers and premium cotton give the ideal balance of comfort and temperature-regulation

- Includes One Flat Sheet, One Fitted Sheet, and Two Pillowcases (Twin and Twin XL include one pillowcase)

- Built in fitted sheet corner straps to hold it in place

- Fits mattresses up to 16'' deep

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

- 300 thread count 40% Outlast® viscose / 60% cotton

Twin Sheet Set:
Fitted Sheet - 39" x 75 x 12"
Flat Sheet - 66" x 96"
Pillowcases - (1) 20" x 30"

Twin XL Sheet Set:
Fitted Sheet - 39" x 80" x 12"
Flat Sheet - 66" x 102"
Pillowcases - (1) 20" x 30"

Full Sheet Set:
Fitted Sheet - 54" x 75" x 15"
Flat Sheet - 83" x 92"
Pillowcases - (2) 20" x 30"

Queen Sheet Set:
Fitted Sheet - 60" x 80" x 15"
Flat Sheet - 92" x 102"
Pillowcases - (2) 20" x 30"

King Sheet Set:
Fitted Sheet - 78" x 80" x 15"
Flat Sheet - 108" x 102"
Pillowcases - (2) 20" x 40"

Cal-King Sheet Set:
Fitted Sheet - 72" x 84" x 15"
Flat Sheet - 108" x 102"
Pillowcases - (2) 20" x 40"

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

Pro Tip:
Sheets should be washed every 1-2 weeks. Do not iron, bleach or dry clean your sheets.

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.

Essential Sheet Set - Final Sale
On Sale from $79.50
Why You'll Love It:
The perfect blend of the softness and durability of cotton with the performance of temperature-regulating fibers.

Year Round Comfort

Year-round comfort: NASA-engineered tech and cotton fibers absorb excess heat when warm, release it when cool, ensuring ideal sleeping temperature anytime.

Stays In Place

The innovative elastic corner straps wrap under the corners of your mattress to keep the fitted sheet from popping off the corners.

What's Included

Our sheet sets Include one flat sheet, one fitted sheet, and two pillowcases. *Twin and Twin XL sets only include one pillowcase.
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%.
"Didn't realize how much the sheets would make a difference in my quality of sleep. Definitely buying another set!"
- Becker
"I have tried several sets of sheets that have promised to deliver a night-sweat free sleep, but none have been quite as effective as these. I intend to get another set!"
- Theresa F.

Compare Our Products

Find the perfect solution for your needs

Essential Sheet Set - Final Sale

Essential Sheet Set - Final Sale

Essential Sheet Set - Final Sale
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

Although both sheet 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:

Essential Sheet Set:
The blend of cotton and Outlast® temperature-regulation viscose fibers offers a traditional super soft cotton feel. Ideal for those who prefer a more classic sheet but want temperature-regulation performance.

Performance Sheet Set:
The blend of premium Tencel® and Outlast® temperature-regulation viscose fibers offers a buttery, silky performance feel. Ideal for those who prefer silky smooth softness with the most temperature-regulation performance.

Currently, our sheets are only sold in sets which include the flat sheet, fitted sheet, and pillowcase. However, additional pillowcases are available for purchase.

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.

Slumber Cloud products are designed to help manage heat and humidity build up. It is not an air conditioner with a set temperature degree, but it will react to your temperature all night long to reduce heat build up and manage temperature swings.

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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