Woman wearing the Slumber Cloud Essential Tank made with Outlast® temperature regulation technology to help keep you cool and comfortable throughout the night
A young woman holding a cup of coffee while standing next to her bed and wearing a Slumber Cloud UltraCool Tank
Woman wearing the Slumber Cloud Essential Tank made with Outlast temperature regulation technology
Woman wearing the Slumber Cloud Essential Tank made with Outlast temperature regulation technology
Woman wearing the Slumber Cloud Essential Tank made with Outlast temperature regulation technology
Woman wearing the Slumber Cloud Essential Tank made with Outlast temperature regulation technology
Woman wearing the Slumber Cloud Essential Tank made with Outlast temperature regulation technology
Woman wearing the Slumber Cloud Essential Tank made with Outlast temperature regulation technology
The Slumber Cloud Essential Tank made with Outlast temperature regulation technology
The Slumber Cloud Essential Tank made with Outlast temperature regulation technology
The Slumber Cloud Essential Tank made with Outlast temperature regulation technology
Detailed view of the Slumber Cloud Essential Tank made with Outlast temperature regulation technology
Detailed view of the Slumber Cloud Essential Tank made with Outlast temperature regulation technology
Detailed view of the Slumber Cloud Essential Tank made with Outlast temperature regulation technology
Detailed view of the Slumber Cloud Essential Tank made with Outlast temperature regulation technology
Detailed view of the Slumber Cloud Essential Tank made with Outlast temperature regulation technology
-70% Free Shipping & Returns

UltraCool Women's Tank - Final Sale

The UltraCool Tank offers NASA temperature regulation in ultra-soft jersey knit, perfect for bedtime or casual lounging with a relaxed fit.

*Sizing runs large

Select Color
Black/White
Select Size
$17.70 $59.00you save $41.30
Pairs well with..
Plush Throw Blanket
$39.50 $79.00
Plush Throw Blanket

- Jersey knit for an ultra-soft, breathable fabric with a little bit of stretch.

- Oeko-Tex Standard 100 Certified Technology

- Base Fabric: 47.5% Cotton / 47.5% Modal / 5% Spandex

- Trim Fabric: 100% Japanese Cotton

- Outlast® Matrix Infusion Coating

XS
Width - 16”
Length - 18.5”

S
Width - 17.5”
Length - 19”

M
Width - 19.5”
Length - 19.5”

L
Width - 21.5”
Length - 20”

XL
Width - 23.5”
Length - 20.5”

*We recommend sizing down

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.

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 30 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 30 Night Trial Period.

UltraCool Women's Tank - Final Sale
$17.70$59.00

Why You'll Love It:

Your perfect companion for bed or lounging around the house.

NASA-Engineered Comfort

Outlast® technology infused fibers proactively regulates heat and moisture by absorbing, storing, and releasing heat.

Relaxed Fit

Perfect for bedtime or lounging around the house, the UltraCool Tank has a rounded neckline, sleeveless silhouette, and relaxed body.

Eye-Catching Design

The UltraCool Tank features contrasting colors on the side panels for an eye-catching design.

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

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.

The lounge generally runs slightly small. We recommend sizing up from your standard sizing.

The premium fabric has a super soft cotton hand-feel, with a slight cool touch.

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

Overall rating: 4.5 / 5 from 4 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["topper"].

Review highlights

Reviews

Cooling tank

"Very comfortable, not cooling but at least it doesn’t make me hot"

— Maggie H. (4/5)

Lives up to it's promise

"Keeps me dry and cool while sleeping Washes nicely. Recommend and will buy more."

— Joan S. (5/5)

Runs big

"This top is super soft and comfortable! The only complaint I have is that it runs big. I ordered a medium, and it feels more like a large. I’ll order a size smaller next time."

— Yoriko M. (4/5)

My New Favorite Tank

"I am obsessed with this Essential Tank! I initially wasn't sure what to think of the side panel on the tank, but I love the pop of color it gives! Plus it's perfect for the gym or laying in bed!"

— Vikki (5/5)

Q&A