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  • The Slumber Cloud Core Pillow Covers made with temperature regulation technology propped on a yellow background
  • The Slumber Cloud Core Pillow Covers fitted on pillows
  • A close up of the Blue colored Slumber Cloud Core Pillow Covers
  • A close up of the blue colored Slumber Cloud Core Pillow Covers
  • A close up of the inside of the Slumber Cloud Core Pillow Cover which details the temperature regulation technology coating
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  • The blue colored Slumber Cloud Core Pillow Covers made with temperature regulation technology propped on a yellow background

Core Pillow Covers

Mini spacesuits for your pillows. Designed to zip over your current pillows, these covers automatically adapt to temperature changes to maintain cool comfort throughout the night. These state-of-the-art pillow covers incorporate layer upon layer of proprietary Outlast® temperature regulating fabric so you are always sleeping on the cool side.
Quantity
1
Color White
Size

Pillows

 

Pillow Covers

 
Standard 20" x 26" Standard 21" x 29"
King 20" x 36" King  21" x 37"
  • Standard
  • King
Your Total
$59
Free Shipping

Ground shipping and returns are FREE for all US orders. Shipping typically takes 3-7 business days for most in-stock merchandise. Canada and express shipments are available for an additional fee at checkout.

60 Night Trial

For your peace of mind, all our products come with a 60 night satisfaction guarantee, as well as a 180 night warranty. If you don't love your new bedding, simply send it back for a full purchase price refund. No questions asked! FYI we do our very best to donate returns to charity. 

Financing

Checkout with PayPal Credit to unlock special 6 month financing on purchases of $99 or more.

Save 10% when you spend $400 or more

The Slumber Cloud Core Down Alternative Pillow propped on a yellow background

Core Down Alternative Pillow

"Cool" is the new standard. This classic cotton cover has been infused with technology developed for NASA so there's ...

Standard, Soft/Medium
1
$59Save 10% when you spend $400+
The Slumber Cloud Core Pillow Covers made with temperature regulation technology propped on a yellow background

Core Pillow Covers

$59 Save 10% when you spend $400+

Additional details.

Even the hottest of sleepers can stay cool and comfortable all night long. With two layers of Outlast® fabric, these cooling pillow covers will help keep your head at the perfect temperature all night while complementing the other components of your Slumber Cloud sleep system.

  • One set includes 2 pillow covers One set includes 2 pillow covers
  • 300 thread count - 40% NASA-approved Outlast® viscose / 60% cotton top cover for peak breathability and temperature-regulation 300 thread count - 40% NASA-approved Outlast® viscose / 60% cotton top cover for peak breathability and temperature-regulation
  • Proprietary Outlast® lining fabric for maximum heat management and added comfort Proprietary Outlast® lining fabric for maximum heat management and added comfort
  • Okeo-Tex Standard 100 Certified Technology Okeo-Tex Standard 100 Certified Technology

How warm or cool is this?

Use the temperature guide to balance your bed just the way you like.

The reviews are in.

Game Changer!

"Exceeded our expectations. I was hoping for less head sweating but the cover eliminated my head sweats. I'm amazed!" - Sarah H.

Verified Customer

Amazing Cover

"This pillow cover makes any pillow feel ice cold. My son(2) and myself (45) are head sweaters. With these covers, no more! Love the product so much purchased sheets 2 weeks later." - Christopher C.

Verified Customer

"This pillow cover has quickly become a favorite." - Prevention

By golly it works.

"I was a huge skeptic of the 'NASA cooling fabric' but the elves at Slumber Cloud fooled me! I'm a total convert now." - Eric P.

Verified Customer

Love!

"Love our pillow covers! Sleep so much better without constantly flipping my pillow for coolness!" - Amber T.

Verified Customer

Healthline's Best Overall Cooling Pillowcase

Wonderful.

"These pillow covers are wonderful. They are soft and cooling. I don't know how it works but they do." - John F.

Verified Customer

It’s cool man!

"Forever waking with hot sweats and discarding my pillow to find a cool spot...those days are over! Love this pillow cover!" - Greg B.

Verified Customer

"These cooling covers might be the best-kept sleep secret yet." - Real Simple

Why we're different.

Traditional bedding and moisture wicking technologies react to changes in your body temperature while you sleep. Slumber Cloud is doing something different.

Slumber Cloud Bedding utilizes Outlast® technology for a unmatched approach to temperature regulation. Outlast® technology is proactive, not reactive. As your body temperature increases during sleep, Outlast® technology stores that heat to keep you cool, and then releases it as you cool down...keeping you feeling “just right”.

Technology

Our premium lining fabric takes a proactive approach by employing active temperature control properties, versus other "cooling" bedding that is moisture-wicking and simply reactive.

Materials

Outlast® materials improve comfort for:

Anyone looking for a more comfortable night’s sleep - they’ll sleep cooler!

Women experiencing menopause - hot flashes and resulting night sweats are reduced so they sleep cooler and drier.

Thermally incompatible couples - individuals sleep at their own ideal temperature

 

Benefits

We pass on everything we learn to our customers. From sleep studies to new technologies, we want to help you make informed decisions about your sleep.

Click to learn more about our studies:
Heat Sleep Study
Humidity Sleep Study

Research

The thoughtfulness is in the details.

It doesn’t stop at thread count. It’s the little things, the thoughtful details, that make our products the best available.

Works Underneath Your Pillowcase

Works Underneath Your Pillowcase

Designed to work even when used underneath your pillowcase

Zippered Enclosure

Zippered Enclosure

Zippered enclosure transforms your existing pillows into performance "cooling" pillows

Easy to Care For

Easy to Care For

Just throw it in your home washing machine

Most frequently asked questions.

How does the technology in the bedding work?

Outlast® technology is made of a unique material that can absorb, store and release excess heat. As an individual’s skin temperature increases, the technology will absorb that excess heat to help reduce overheating. The material will store the excess heat until the skin temperature begins to drop. When this occurs, the stored heat is released back to the individual to prevent chill.

By managing the build-up of heat and moisture under the covers, Outlast® technology helps keep you at a comfortable temperature so you sleep “just right.”

How many degrees cooler will this keep me?

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.

What's the difference between Slumber Cloud bedding and other "cooling" bedding I might have tried?

Slumber Cloud takes a proactive approach to temperature control by absorbing and storing excess heat when temperatures are too warm and releasing heat when temperatures are too cold. This approach is different than most other "cooling" bedding technologies/products on the market that are moisture-wicking (ex. Bamboo & Eucalyptus).

Moisture-wicking is a reactive approach because it doesn't start to cool you down until you build up sweat and moisture and then wicks it off of you. Our products are designed to prevent you from ever getting to the point of sweating and building up moisture.

Are these pillow covers or pillowcases?

Not to be confused with pillowcases, this set of pillow covers are traditionally used underneath your pillowcases to keep your head cool and extend the lifetime of your pillows.

Does this come with one or two pillow covers?

The Core Pillow Cover Set comes with two pillow covers. That means one for you and one to share with your partner (or not share, we don’t judge).

Can I put a pillowcase over my pillow covers?

Yes, we want your bed to look nice and match the rest of your linens so we made sure the technology inside our pillow covers will still work even when used with a pillowcase.

Is this machine washable?

Yes! Just like traditional bedding, Slumber Cloud products are designed to be washed and dried in your home washer and dryer. Please carefully follow the care instructions on the tag of your products.

Can I use an iron on my bedding?

The technology in our bedding is sensitive to high heats - instead of ironing we recommend using a wrinkle release spray such as Iron In a Bottle for that crisp and finished look.

How do I sanitize my bedding?

Although we recommend against using high heat when washing your bedding there are products that can help with sanitizing your bedding. Here are a few of our favorites: Dropps & Tide

How should I remove stains?

Please refrain from using harsh chemicals such as bleach and oxiclean on your bedding. Instead opt for more natural alternatives such as a small amount of dish soap, a warm water & vinegar solution, or specialty formulated laundry detergent such as Dropps

How do I wash my pillow covers?

To wash your pillow covers, please follow the washing instructions on the tag. If you have cut your tags after purchase, then it is recommended to wash with Slumber Cloud Free & Clear Laundry Detergent or a mild detergent in cold water on a delicate spin cycle. When it’s time to dry your pillow covers, please dry it on low heat or air dry.

Is there a trial period?

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

Can I still return an item even if it's been washed?

We accept returns in any condition within 60 days of purchase! We want you to absolutely love your new bedding, so if you wash an item, try it out, and decide it's just not for you, we can definitely still initiate a return.

Please note we do our very best to donate all returns to local charities instead of a landfill. We appreciate your help in this process by washing any used items before returning them to us.

Are shipping fees covered for returns?

All shipping fees for domestic returns are completely free! When you initiate a return through our returns platform, you will receive a prepaid shipping label to get the item back to us.

If you live outside the US and are looking to initiate a return, please check out the return policy in the International FAQs.

Are your products covered by a warranty?

Yes! All of our products are covered not only by the 60 night trial period but also a 180 day warranty which covers manufacturers defects (i.e. stitching, sizing).

Please note in addition to damage caused by disregard of care instructions, temperature performance is not considered a manufacturers defect or covered by the product warranty.

Does Free Shipping Apply To International Orders?

Free shipping is only valid for US and Armed Forces delivery addresses. However, we do offer discounted shipping rates to Canada addresses.

Do you ship internationally?

Currently, we only ship internationally to Canada. At the time of purchase we include the cost of shipping, taxes, and duties for Canadian shipments. No additional fees will incur at delivery, but if they do please contact our customer service team at info@slumbercloud.com to take care of the issue.

For all other countries, If you find a forwarder or have a friend or family member here in the states, we would be more than happy to work with you to get it there.

Are shipping fees covered for returns?

All shipping fees for domestic returns are completely free! When you initiate a return through our returns platform, you will receive a prepaid shipping label to get the item back to us.

If you live outside the US and are looking to initiate a return, please check out the return policy in the International FAQs.

How do I initiate a return?

If you're looking to initiate a return, just head over to our returns page!

Please note that we are not able to process returns for items listed as Final Sale or past the 60 day return period.

What is your return policy?

All products sold on the Slumber Cloud website come with a 60-Day Satisfaction Guarantee. Sleep on it, wash it, and really test it out - If you are not fully satisfied with your new bedding you can return the item(s) within 60 days of your purchase date, no questions asked. An refund will be issued, within 7 business days of receiving the returned product.

Verified Reviews

Free Shipping & Returns

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

Try it For 60 Nights

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

A favourite among our consumer testers, who said they wanted to keep it for themselves.

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