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.
|Standard||20” x 26”||Standard||21” x 29”|
|Queen||20” x 30”||Queen||21” x 31”|
|King||20” x 36”||King||21” x 37”|
We recommend to 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 or want a softer pillow.
The medium-firm pillow is recommended for those who regularly sleep on their side and back or want a bit firmer pillow.
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.
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.
Utilize Affirm, Shop Pay Installments, or PayPal Credit during checkout as flexible payment plans to split your purchase amount into equal and interest-free payments.
Save 10% when you spend $400+
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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
- NASA-approved Outlast® lining fabric on both sides fights off heat
- Luxury 100% down alternative fiber-fill
- Filled in the USA
- Oeko-Tex Standard 100 Certified Technology
- Includes 1 Core Down Alternative Pillow
The reviews are in.
Real Simple's Best Overall Cooling Pillow 2020
"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.
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
Men's Health's Best Cooling Pillow
"I am a deep sleeper and often wake up with a sweaty pillow - what a beautiful morning with a totally dry pillow." - Jocelyn C.
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
As featured in Oprah Magazine
"Best pillow I've ever had - for the first time I stayed at a hotel and missed my home pillow." - Andrew O.
"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
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”.
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.
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
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 allow for perfect neck support
Designed to manage heat through your pillowcase
Easy to Care For
Just throw it in your home washing machine
Most frequently asked questions.
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.
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.
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.
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.
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.
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.
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.
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.
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
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.
Free shipping is only valid for US and Armed Forces delivery addresses. However, we do offer discounted shipping rates to Canada addresses.
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 firstname.lastname@example.org 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.
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.
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.
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.
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.
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.
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!