Woman wearing the Slumber Cloud Essential Raglan Long Sleeve made with Outlast® temperature regulation technology to help keep you cool and comfortable throughout the night
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Woman wearing the Slumber Cloud Essential Raglan Long Sleeve made with Outlast temperature regulation technology
Woman wearing the Slumber Cloud Essential Raglan Long Sleeve made with Outlast temperature regulation technology
Woman wearing the Slumber Cloud Essential Raglan Long Sleeve made with Outlast temperature regulation technology
Woman wearing the Slumber Cloud Essential Raglan Long Sleeve made with Outlast temperature regulation technology
Woman wearing the Slumber Cloud Essential Raglan Long Sleeve made with Outlast temperature regulation technology
Woman wearing the Slumber Cloud Essential Raglan Long Sleeve made with Outlast temperature regulation technology
The Slumber Cloud Essential Raglan Long Sleeve made with Outlast temperature regulation technology
The Slumber Cloud Essential Raglan Long Sleeve made with Outlast temperature regulation technology
The Slumber Cloud Essential Raglan Long Sleeve made with Outlast temperature regulation technology
Detailed view of the Slumber Cloud Essential Raglan Long Sleeve made with Outlast temperature regulation technology
Detailed view of the Slumber Cloud Essential Raglan Long Sleeve made with Outlast temperature regulation technology
Detailed view of the Slumber Cloud Essential Raglan Long Sleeve made with Outlast temperature regulation technology
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UltraCool Raglan Long Sleeve

Our UltraCool Raglan Long Sleeve offers premium comfort and style with NASA-engineered temperature regulation, perfect for everyday wear.

*Please note that this tee runs small.

Select Color
Black/Black
Select Size
$17.70 $59.00you save $41.30
Pairs well with..
UltraCool Comforter
On Sale from $207.20 $259.00
UltraCool Comforter

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

- Three quarter length sleeves

- 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 - 18”
Length - 24.25”

S
Width - 19.5”
Length - 24.75”

M
Width - 21.5”
Length - 25.25”

L
Width - 23.5”
Length - 25.75”

XL
Width - 25.5”
Length - 26.25”

*We recommend you size up

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 Raglan Long Sleeve
$17.70$59.00

Why You'll Love It:

Easy, everyday essential.

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 Raglan Long Sleeve has a premium cut with three quarter length sleeves.

Eye-Catching Design

The UltraCool Raglan Long Sleeve is offered in contrasting neck bands and waist bands 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: 4.25 / 5 from 4 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["fabric","shirt"].

Review highlights

Reviews

Not so cool

"Supposed to be cool but material is thicker than some of my long sleeve shirts. It’s a nice shirt but not much different from any other shirt I own"

— Jennifer R. (3/5)

"It’s nice"

— Melissa (4/5)

Really nice!

"An outstanding lounge shirt, comfortable enough to wear for a day on the couch, flattering enough to wear out, cool enough to sleep in."

— Ben M. (5/5)

Love the fabric!

"Got this for my finance and she says it's extremely comfortable. The fabric is super soft and defiantly helps keep me at the perfect temperature. I will be buying additional styles for myself!"

— Willy D. (5/5)

Q&A