Sold Out Up to -60% Final Sale

Flannel Sheet Set - Final Sale

Stay cozy with our brushed flannel sheets, featuring Outlast® temperature-regulating blend for warmth without overheating.


Final Sale Items are not eligible for return, exchange, or the 60-night trial period. 

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

- Brushed flannel finish for a premium hand feel

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

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

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"

Split-King Sheet Set:
Fitted Sheet - (2) 39" x 80" 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. 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 1-2 weeks. Reduce wrinkles by removing these from the dryer immediately.

All U.S. orders are shipped right to your door, free of charge.

Sleep on it, wash it, and really put it to the test for 60 nights! If you don’t love your new bedding, just return it for a full refund. No questions asked!

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

Why You'll Love It:

Space-age temperature-regulation you can wrap yourself up in, without waking up in a hot and sweaty mess.

NASA-Engineered Comfort

Using a blend of NASA-engineered Outlast® viscose and cotton, you get the cozy comfort of traditional flannel, but without the heat buildup.

Stay-Put Design

The fitted sheet is designed with a full elastic band plus four corner straps to keep the fitted sheet from shifting and the corners from popping off.

Single-Ply Construction

The Flannel Sheets have a single-ply construction with long staple fibers for high-quality, breathable comfort.

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. Learn More

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%. *Outlast Humidity Sleep Study

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%.*Outlast Heat Sleep Study

FAQs

The premium fabric has a brushed flannel hand-feel, and has a good amount of weight to the fabric.

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.

Yes! The basis of the technology was originally founded and used by NASA. It even holds a Certified Space Technology Foundation seal of approval!

Like a true set of flannel sheets, these are denser and softer against the skin than our Essential Sheets, providing you with ultimate comfort and warmth.