SLEEP EDUCATORS
Cooler sleep environments matter.
Hollow's breathable grid helps move air through the pillow instead of trapping heat under your head.
Hollow Ergonomic Pillow™
Cooler. Better aligned. Made for your sleep.
Gentle Comfort. Proper Neck Support.
Cooler Comfort, Less Trapped Heat
Pressure relief without sinking flat
100 Night Risk Free Sleep Trial
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Try it risk-free for 100 Night. Not in love? Get a full refund—no questions asked.
Description
Description
🌬️ Sleep cool with the Hollow Air Ergonomic Pillow™
Hollow™ is the pillow for those of you who often wake up hot at night. It combines cooling comfort with ergonomic support - so you can sleep peacefully, comfortably and undisturbed.
🌀 Advanced AirFlex Grid™
The secret behind Hollow Air Comfort Pillow™ is the unique TPE grid of 1400 air channels. With its open honeycomb pattern, air can flow freely through the pillow, effectively wicking away excess heat. The result? A pillow that stays airy and cool all night long.
🛏️ Adjustable support that adapts to you
The core consists of adjustable shredded memory foam that molds to your head and neck. It provides proper support, reduces tension and ensures a healthy sleeping position - whether you sleep on your side, back or stomach.
🌿 Safety for you and your skin
All materials are OEKO-TEX® Standard 100 certified and free of harmful chemicals - gentle for both you and sensitive skin.
⭐ Cooler, healthier sleep - every night
Hollow™ Pillow is more than just a pillow. It's the key to a cooler, healthier and more comfortable sleep. Perfect for those who sleep hot and dream of waking up fresh and rested.
Specifications & Washing
Specifications & Washing
Size : 45 x 65 cm
The pillow fits pillowcases in size 50 x 70 cm.
Hardness/Height : 100% adjustable in height & hardness
Weight: 3.36 kg
Content : 80% Cold Touch™ memory foam / 20% Microfiber
Blue side: AirFlex Grid™
White side: 100% Microfiber
Hollow Air Ergonomic Pillow™ grid cover: Hand washable
White outer cover: Machine washable at 30°C.
All materials are OEKO-TEX® Standard 100 certified , which means they are tested free of harmful chemicals - for a healthy and safe pillow you can sleep on with confidence.
100 nights sleep guarantee
100 nights sleep guarantee
We understand how important it is to find the perfect pillow that will give you a good and restful night's sleep. That's why we prioritize YOU, our wonderful customers, and offer a 100-night sleep guarantee, where you can test our pillows in your own home. You can take all the time you need, without any pressure for 100 nights!
We want to ensure that our pillows meet your individual needs, which is why your feedback is our top priority.
Simple, easy and with your opinion in focus , the way it should be!
If you do not find that Hollow Air Ergonomic Pillow™ meets your expectations, please contact us and we will guide you further.
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I love how supported my neck feels. Once I adjusted the height, my head and back felt more in line. Really comfy to settle into.
SLEEP SUPPORT FUNDAMENTALS
Built Around What Sleep Professionals Look For
Cooler sleep, steadier head and neck support, and less overnight adjusting. The basics that make a pillow feel dependable night after night.
PHYSICAL THERAPISTS
Neutral head + Neck support matters.
The flexible grid is built to support without collapsing flat or pushing your neck into awkward angles.
RECOVERY COACHES
Consistent rest matters.
A pillow that stays cool and supportive helps make better sleep easier to repeat every night.
The difference is personal.
Cooler comfort. A supported neck. A height that feels right. Discover how Hollow fits into everyday nights.
I usually fold the edge of my pillow under my neck. With this shape, there’s already support there. Soft under my head, with a more supported feel.
I start on my side and often end up on my back. Once I’d got the filling how I wanted it, Hollow felt comfortable in both positions. There’s plenty of room to move around and find a nice spot.
I wanted support for my neck and spine without that propped-up feeling. After adjusting the filling, I felt more comfortable and noticed less neck pain in the morning.
Look at that cushioning! Soft enough to snuggle into, with a shaped edge that gives my neck somewhere to rest.
Loved by those who sleep on Hollow.
Real experiences from customers who’ve made Hollow part of their nightly routine.
Waking up shouldn’t start with a stiff neck.
Hollow cradles your head and supports your neck’s natural curve.
Helps maintain natural spinal alignment
Adjusts to your comfortable height
Lets heat escape for cooler comfort
Sleep on your side. Settle into your shape.
No more folding your pillow to fill the gap. Hollow’s contoured edge supports the space beneath your neck, while adjustable filling lets you fine-tune the height for your side of the bed.
Innovative Air Circulation
Achieve a cooler sleep
Hollow Ergonomic Pillow™'s unique triangle layer allows air to flow freely through the pillow, effectively wicking away excess heat. Sleep cool and undisturbed all night long.
Your shape. Your support. Your Hollow.
Your body has its own curves. Your pillow should work with them. Hollow combines contoured neck support with adjustable filling to help keep your head, neck and spine comfortably aligned—with breathable airflow for cooler comfort.
Trusted By Thousands Of Happy Sleepers
Real people are sleeping deeper, cooler, and more comfortably with mellow.
95%
of Hollow customers sleep at their ideal temperature
97%
would recommend hollow to their family and friends
98%
of hollow customers have left 5 star reviews
GET SMARTER
Why good sleep is important
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More energy
Wake up refreshed and ready for the day.
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Better focus
Increase your concentration and productivity.
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Healthier immune system
Strengthen the body's natural defenses.
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Less stress
Reduce cortisol levels and sleep soundly.
Your bed. Your pillow. 100 nights to decide.
Try Hollow at home. Adjust the filling, find your comfort and take your time. If it’s not the right fit, contact us within 100 nights to request a refund under our sleep guarantee.
FAQ's
What makes Hollow different from regular pillows?
What makes Hollow different from regular pillows?
Its flexible TPE honeycomb structure responds to your head and neck while maintaining supportive shape. Unlike traditional foam or fibre filling, it allows continuous airflow and won’t clump or require constant fluffing.
Which sleeping positions is Hollow suitable for?
Which sleeping positions is Hollow suitable for?
Designed for side, back and combination sleepers. The responsive honeycomb structure adapts as you move, supporting comfortable alignment throughout the night.
Does it really sleep cooler?
Does it really sleep cooler?
The open honeycomb design allows air and heat to move through the pillow instead of becoming trapped beneath your head.
How do i clean it?
How do i clean it?
Remove and wash the pillowcase separately. Gently rinse the pillow core with cool water, then allow it to air-dry completely before using it again.
Do you deliver worldwide?
Do you deliver worldwide?
Yes, we ship worldwide with tracked delivery. Shipping times vary by destination, and you’ll receive tracking details as soon as your order has been dispatched.
What if it isn’t right for me?
What if it isn’t right for me?
You’re protected by our 100-night comfort guarantee. Try it at home, and if it isn’t the right fit, contact us within the trial period to arrange a return under our return policy.
Customer Reviews
Overall rating: 5.0 / 5 from 18 reviews.
Honestly feels like four things in one pillow. It stays cooler, supports my neck properly keeps my spine feeling more naturally aligned, and the memory foam gives just the right amount of support. I wake up without that usual neck stiffness now. Easily one of my best purchases.
I didn’t realize how much my old pillow was affecting my sleep until I changed to this. My neck feels more relaxed, my back feels better in the morning and I’m sleeping much more comfortably. Thanks HOLLOW.
Best pillow I’ve had in years. I love that you can add or remove the fluff depending on how high you want it. Once I got mine right, it felt made for me.
My daughter gifted me the HOLLOW and honestly, it’s probably the best gift she’s bought me. My neck and spine feel much better supported now and I’m not waking up feeling twisted anymore.
This one really does feel different. My old pillow pushed my head too high, but HOLLOW feels much better for my neck and spine. I’m waking up far less sore now.
I bought it because of my neck pain and honestly didn’t expect much. A week later I realized I wasn’t waking up stiff anymore. Thanks HOLLOW, this has made a real difference.
My back and neck used to feel out of line in the mornings. Since changing to HOLLOW everything feels more supported and I’m sleeping much more comfortably.
I ordered one for my husband because he was always complaining about neck pain. He says it feels much better already and now I’m thinking of getting one for myself too.
My partner ordered hers first and I kept trying it, so I bought my own. Comfortable, breathable and easy to adjust. Definitely feels more thought-out than a normal pillow.
I bought it mainly for the cooling side of it but the support is what surprised me most. It feels like my head and neck are sitting more naturally instead of being pushed forward.
Bought this for my wife after she kept complaining her pillow was too warm. She loves it. She said it feels cooler and doesn’t squash flat by morning like her old one.
I ordered two but wasn’t sure about the honeycomb design at first, but it’s surprisingly comfortable. My head doesn’t feel like it sinks too far down and I wake up feeling less stiff through the shoulders.
I’ve tried so many pillows that felt great for one night and then went flat. This one feels completely different. I adjusted the filling a little and now my neck sits in a much better position.
Got one for my dad because he’s very fussy with pillows and usually says everything is either too high or too soft. He’s actually kept using this one, which says a lot. He likes being able to change the height.
I’m mostly a back sleeper but turn onto my side during the night. This works well for both because you can change the height. It feels supportive without being hard.
I ordered one for my husband because he’s always flipping his pillow over looking for the cool side. He actually likes this one and has stopped stealing mine so I ended up ordering a second.
Bought it for myself because I kept waking up with a stiff neck. Took me a couple of nights to get the filling right but once I did it felt much more supportive. Sleeping on my side is noticeably more comfortable now.
I sleep really hot🥵 and this has been much better than my old memory foam pillow The grid feels cooler and I like that I could adjust the height instead of just hoping it suited me.😎