• The Slumber Cloud Core Down Alternative Pillow propped on a yellow background
  • The Slumber Cloud Core Down Alternative Pillow made with temperature regulation technology
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  • A close up shot of the Slumber Cloud Core Down Alternative Pillow
  • A close up shot of the Slumber Cloud Core Down Alternative Pillow

Core Down Alternative Pillow

"Cool" is the new standard. This classic cotton cover has been infused with technology developed for NASA so there's no more flipping to the "cool side". It's love at first squeeze.

Quantity
1
Size

Pillows

 

Pillow Covers 

 
Standard  20” x 26” Standard  21” x 29”
Queen  20” x 30” Queen  21” x 31”
King 20” x 36” King  21” x 37”
  • Standard
  • King
Firmness

We recommend to pick your firmness based on your typical sleeping position.

Soft/Medium:

The soft-medium pillow offers the perfect support for those that prefer to sleep on their stomach and back or want a softer pillow.

Medium/Firm:

The medium-firm pillow is recommended for those who regularly sleep on their side and back or want a bit firmer pillow.

  • Soft/Medium
  • Medium/Firm
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 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 temp...

White, Standard
1
$59Save 10% when you spend $400+
The Slumber Cloud Silk Pillowcase made with temperature regulation technology

Silk Pillowcase

Sleep like a baby, while fighting off wrinkles and split ends. Designed to zip over your current pillow, our 100% sil...

Pearl, Standard
1
$69Save 10% when you spend $400+
The Slumber Cloud Core Down Alternative Pillow propped on a yellow background

Core Down Alternative Pillow

$59 Save 10% when you spend $400+

Additional details.

Rest your head on the pillow designed for the best support and perfect sleeping temperature. The cover is infused with a heavy coating of space aged Outlast® technology. The 300 thread count, 100% cotton outer shell keeps absorbs, stores, and releases heat as your temperature changes throughout the night.

  • 300 thread count, 100% cotton outer cover for soft, breathable comfort 300 thread count, 100% cotton outer cover for soft, breathable comfort
  • NASA-approved Outlast® lining fabric on both sides fights off heat NASA-approved Outlast® lining fabric on both sides fights off heat
  • Luxury 100% down alternative fiber-fill Luxury 100% down alternative fiber-fill
  • Filled in the USA Filled in the USA
  • 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.

Real Simple's Best Overall Cooling Pillow 2020

Love it.

"Headed into menopause I am often super hot. This is a dream. I feel like a princess and love how cool it is." - Dianna T.

Verified Customer

Perfect Stomach Sleeper Pillow!

"My Core Down Alternative Pillow was as advertised. It was cool and comfortable. I love it. It is the best pillow I have ever had." - Deborah

Verified Customer

Men's Health's Best Cooling Pillow

Fabulous!

"I am a deep sleeper and often wake up with a sweaty pillow - what a beautiful morning with a totally dry pillow." - Jocelyn C.

Verified Customer

Perfect Stomach Sleeper Pillow!

"These pillows are what I've been after my entire adult life - they're the perfect full, soft, not overstuffed, and still supportive. I tend to be hot sleeper, and I don't sweat on these pillows. Worth every penny." - Sarah

Verified Customer

As featured in Oprah Magazine

Wonderful.

"Best pillow I've ever had - for the first time I stayed at a hotel and missed my home pillow." - Andrew O.

Verified Customer

So comfortable

"I can’t get enough of these pillows! They are truly so comfortable- exceeded my expectations! I’m going to buy more for my guest bedroom." - Efrat

Verified Customer

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.

Two Firmness Levels

Two Firmness Levels

Two firmness levels allow for perfect neck support

Manages Heat

Manages Heat

Designed to manage heat through your pillowcase

Easy to Care For

Easy to Care For

Just throw it in your home washing machine

Most frequently asked questions.

I need a new pillow, what firmness is best for me?

Pick your firmness based on your typical sleeping position. The soft-medium pillow offers the perfect support for those that prefer to sleep on their stomach and back. The medium-firm pillow is recommended for those who regularly sleep on their side and back.

Can I put a pillowcase over my pillow?

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

Which one is cooler, the UltraCool or Core pillow?

True to its name, the UltraCool pillow is going to be the "cooler" of the two pillow options. Although you will still get great temperature control with the Core Pillow, this is designed more for sleepers would prefer a traditional pillow with a modern temperature-regulation technology added in.

How does the technology in the pillow 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.

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.

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 pillow.

Can I use an iron on my pillow?

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 pillow?

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?

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

Keep the heat on low and don't use an auto-dry setting. The sensors in your high-tech dryer will only detect surface dryness, so your pillows will almost certainly still be holding water at the end. Before putting them in the dryer you will want to make sure that the fill in the pillows hasn't gone all to one end of the encasement. Also remember to spread out the fill (fluff them), two or three times during drying.

One of our favorite tricks for washing your pillows is tennis balls or shoes. Grab a few clean tennis balls and throw them in the dryer with your pillows. As they bounce around your dryer they will fluff your pillows and keep the fill from bunching up. This also leads to a more consistent dryness throughout the cushion and shorter drying times. If you are looking for something a little more refined than tennis balls or shoes, you can find products called dryer balls that are often made of wool or a synthetic material that do the exact same thing. Just try to get ones that are heavy enough to fluff your pillows while they 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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