"Absolutely fantastic pillows. We purchased two king-size Slumber Cloud pillows. I normally use a latex pillow and my husband uses a feather pillow, but these have completely won us over. I'm actually sleeping better since we switched. Highly recommend."
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Final Sale
Core Down Alternative Pillow - Final Sale
Hypoallergenic Fill
Made In USA
NASA Cooling Technology
Sale price:
$51.60
Regular price:$129.00
Upgrade your sleep with our Core Down Alternative Pillow. Infused with NASA-engineered tech, it offers unmatched support and softness for ultimate comfort.
Free Shipping: All U.S. orders are shipped right to your door, free of charge. Orders are typically shipped within 24 business hours.
30 Night Risk Free Trial: 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!
Price Matches: Buy any Slumber Cloud item now. If it goes on a deeper sale within 30 days, just let us know and we'll refund the difference.
*Final Sale items and colors are not eligible for return, exchange, or the 30 Night Trial Period.
Core Down Alternative Pillow - Final Sale
On Sale from $43.60
Why You'll Love It:
Thoughtful details, inside and out.
Filled With The Good Stuff
Our Polysilk™ down alternative fiberfill mimics down without heat buildup, offering advanced comfort without hassle.
Good Enough For NASA
Built with NASA-engineered material that absorbs, stores, and releases excess heat to regulate temperature for optimal comfort all night.
Supportive Sleep
Choose Soft/Medium or Medium/Firm firmness options tailored for stomach, side, or back sleepers, ensuring ideal support for every sleeping style.
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%.
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%.
Compare Our Products
Find the perfect solution for your needs
Core Down Alternative Pillow - Final Sale
| Core Down Alternative Pillow - Final Sale |
|---|
Our Products
Outlast® PCM Technology
Proactive temperature management
Brands Like Buffy & Cozy Earth
Moisture-Wicking Fabrics
Reactive Cooling
Brands Like Parachute & Boll & Branch
Traditional Fabrics
Traps Heat & Moisture
| Us | Moisture-Wicking Fabrics | Traditional Fabrics | |
|---|---|---|---|
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Prevents Sweat Build-Up
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✓ | — | — |
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Manages Hot & Cold Sleepers' Needs
|
✓ | — | — |
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Cool To The Touch
|
Exceptional | Moderate | Poor |
FAQs
I need a new pillow, what firmness is best for me?
Can I put a pillowcase over my pillow?
Should I use a pillow cover with my pillow?
Which one is cooler, the UltraCool or Core Down Alternative pillow?
Over 30,000 happy sleepers have spoken
We've helped over 30,000 sleepers unlock their best rest yet. See why customers and the press are calling our products a dream come true. Read all reviews
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These sheets and duvet cover are so comfy and cozy! They really do keep me cooler at nights too; which I've been fighting with my entire life - I'm an overheater! I already recommended them to my best friend.
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Perfect for California Summer! I love the lightweight and how well it regulates heat, so that we are not hot nor cold. It is perfection. I was hesitant because of the cost but glad that I decided to purchase it
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I have bought countless pillows, new bed, different positions, tried couch, bought new couch. Got this ultra cool pillow, so soft, literally feels like sleeping on a nice cool cloud. Slept the full night, first full night in over a year.
"For truly hot sleepers, leave it to NASA engineering to figure out a way to help you finally stay cool at night."Real Simple
Overall rating: 4.4309483 / 5 from 601 reviews.
AI Generated Review Summary
The Core Down Alternative Pillow offers unmatched support and softness, praised for its cool feel and ability to stay cool throughout the night. Customers appreciate its comfort and quality, though opinions vary on its firmness and cover material.
Summary topics
- Comfort Feel (4%): Customers expressed satisfaction with the feel of the pillows, describing it as nice, great, and cool.
- Coolness Throughout the Night (2%): Customers raved about the slumber cloud pillow, praising its ability to keep them cool throughout the night.
- Neck Comfort (4%): Opinions vary, some users found the pillow comfortable and cooling, while others experienced discomfort or neck pain.
- Sleep Quality (13%): Customers loved the pillow, with many describing it as comfortable and perfect for their night sleep.
- Pillow Support (4%): Customers appreciated the great support and comfort provided by the SlumberCloud pillow, making it a popular choice.
Review topics: [size, fit, support, firmness, fabric, material, quality, smell, customer service, shipping, feel, comforter, cover, husband, shape, problem, softness, height, dreams, sleep, stitching, wife, improvement, works, temperature, price, pillow, stay, head, neck].
Review highlights
- "Great comforter, great duvet cover, great pillow--a great night's sleep!" —
- "Not only does this pillow stay cool, but it is also a nice support for my neck, as I sleep on both my side and my back." —
- "The pillows stay cool and help me sleep better." —
Reviews
pillow
"I got the alternative down pillow as a gift for Christmas. My daughter was home from college and borrowed it one night, she loved it so much I ordered one for her too!"
Perfect pillow for a stomach sleeper
"Being a stomach sleeper, I have always struggled with finding a good pillow that supports my neck. This pillow is the first in many tries that supports me comfortably so I don’t awaken with a stiff neck or slight headache."
Comfy but not cooling
"We finally replaced the “NASA” pillows that we have had for years! We thought that these would be similar but they are not. Still great pillows, just not what we expected."
I love it!
"I've tried a bunch of different pillows & all of them made my neck hurt & my face too hot when on my side. This one has the perfect height & is supportive & dense yet cushiony. Just like real down without the allergies."
Cloud pillow
"I have been searching a long time for a pillow that I love. And this one seems to fit me perfectly. My long search is over and I will be sleeping amazingly. Thank you."
this is the most comfortable
"this is the most comfortable pillow I've ever slept on. nothing more to add."
Soft comfort with a firm touch
"This pillow is the perfect firmness for this side sleeper. From the first night it felt perfect and I never have to fight it into the right shape. Sweet dreams!"
Great pillow
"So comfortable"
Good Pillow
"I search for a pillow that was made in the USA and this one came up in my search but after receiving the pillow on the tag is listed made in China. I'm hoping it's only the outer shell that is made in China. I did sleep on the pillow, and it should have a bit more filling because the technology is amazing and contours to the head, it just went a bit too flat. The pillow had a distinct smell which should dissipate with time, and I did place in air cycle in dryer for 30 minutes."
