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Check out [Save More When You Bundle](https://mellowsleep.com/pages/shop)• [Up to 50% Off Sitewide](https://mellowsleep.com/pages/shop)• ## Best Sellers [](https://mellowsleep.com/products/cloud-alignment-pillow "CloudAlign Pillow") BESTSELLER [](https://mellowsleep.com/products/mellow-hotel-pillow "Waterproof & Stain-Resistant Hotel Pillow") [](https://mellowsleep.com/products/marshmellow-comforter "MarshMellow Comforter") BESTSELLER [](https://mellowsleep.com/products/mellow-flex-pillow "Flex Pillow") [](https://mellowsleep.com/products/waterproof-stain-resistant-hotel-pillow-copy "Waterproof & Stain-Resistant Hotel Pillow (2-Pack)") [](https://mellowsleep.com/products/cloudalign%E2%84%A2-pillow-2pk-bundle "2 CloudAlign Pillows + 2 Free Cooling Pillowcases") BESTSELLER CLAIM 40% OFF RIGHT NOW! 02 HRS : 16 MIN : 57 SEC  # Are You Tired of Buying Pillows That Are Too Flat or Too Firm? The MellowFlex’s breakthrough AdjustFill™ technology is the answer. The customizable memory foam lets you adjust it to the perfect height and fluff, so your neck and spine stay perfectly aligned all night long. _“I adjusted this pillow to fit my neck needs and alignment improved immediately.”_ -Raymond V. **CLAIM YOUR 40% OFF!** AS SEEN ON  Flex Pillow Taylor Demonstration from Mellow Sleep on Vimeo  Playing in picture-in-picture Play Fullscreen  Adjustable Fill Boosts Sleep Quality  #1 Selling Pillow On TikTok  Chiropractor Recommended  Rated 5 Stars By 99% of Customers ## ADJUSTFILL TECHNOLOGY ## Designed & Recommended by Chiropractors _"I recommend this pillow to anyone who wants the perfect height. It fixes the alignment issue most pillows fail to address."_ -Dr. Heim ## **Adjust To Your Perfect Height!** ## Only the Mellow Flex combines cloud-soft shredded memory foam with a AdjustFill (™) technology, so you get the exact support your body needs, every single night. Slide 1 of 4         **GET YOUR FLEX PILLOW NOW** ## YOU’LL NEVER GO BACK! Finally Fix the Root Cause of Neck Pain Most pillows take a "one-size-fits-all" approach. And your neck pays for it. You wake up with a stiff neck or with upper back pain because manufacturers didn't take your height into consideration. The Mellow Flex breaks this cycle with AdjustFill Technology. You add or remove shredded memory foam until **your pillow sits at the exact height your body needs.** **The result: a single pillow that works for YOUR body, preventing pain, aches, stiffness, and every classic "pillow problem."**  ## GET A FULL NIGHT’S REST AND… ## Sleep In Perfect Harmony With Your Spine When you switch to the Mellow Flex, everything changes on night one. **Your spine stays in perfect alignment.** Pressure points disappear. Your muscles finally release. No more having to adjust the fluff in the middle of the night. Just fill it to your perfect firmness and rest. **Your body gets the deep, restorative sleep it's been missing** because you gave it a pillow that was actually built for it. ## finally the perfect pillow Enjoy The Best Sleep You've Had In Years The **Mellow Flex AdjustFill System** was developed with input from chiropractors to help your body naturally rest in its ideal sleeping position. This doesn't just feel good proper alignment tackles the root problems caused by poor sleep: Relieves Snoring & Symptoms of Sleep Apnea Helps Reduces Morning Stiffness Helps You Stay Asleep Through the Night Promotes Daytime Energy Prevents Arm Numbness & Tingling   ## COMFORT MADE JUST FOR YOU ## Rebounding Memory Foam Nothing undermines a great pillow like materials that make you hot, itchy, or uncomfortable. That's why the Mellow Flex uses MellowSoft Shredded Memory Foam **premium-grade fill that cradles your head**, reduces pressure points, and resists the compression that destroys traditional pillows. The OEKO-TEX certified cover is independently tested and proven safe from over 350 harmful substances 100% safe for long-term skin contact and perfect for sensitive skin. You get luxury, breathable, and antimicrobial fabric that protects your skin, hair, and health. ## PREMIUM MATERIALS ## Enjoy Personalized Comfort Night after Night  Adjustable Fill Technology  Baby-Safe Fabric  Stays Fluffy For Years  Hypo Allergenic & Antimicrobial   Adjustable Height Adjustable Firmness Extra Fill Included Chiropractor Endorsed Lifetime Warranty Mellow Flex Pillow Others      ## Designed To Support Your REAL Sleep Style (Even If It Changes)  **Stomach Sleepers** **Go minimal with your fill for a flat, soft surface** that doesn't push your neck into unnatural angles. The Mellow Flex stays where you set it all night.  **Side Sleepers** **Set your fill to 5-6" of loft to keep your shoulder and head perfectly aligned.** No more arm numbness, no neck cramp, no 3am wake-ups to readjust a pillow that's slid flat.  **Back Sleepers** **Remove foam to a lower loft and let your neck rest in its natural curve** without being pushed forward. Your cervical spine stays in alignment through the entire night. ## 99% Of Customers Give MellowFlex 5 Stars! Slide 1 of 3 Rachel R.  Verified 1/27/2026 I adjusted the height and firmness until it was right. No more pillow frustration. Jonathan D.  Verified 1/25/2026 The mellow flex give me custom fit for my neck without guessing. Perfect pillow. BarbaraL.  Verified 1/26/2026 This breathable adjustable pillow doesn't make me hot and custom fit is perfect for my neck. Rachel R.  Verified 1/27/2026 I adjusted the height and firmness until it was right. No more pillow frustration. Jonathan D.  Verified 1/25/2026 The mellow flex give me custom fit for my neck without guessing. Perfect pillow. BarbaraL.  Verified 1/26/2026 This breathable adjustable pillow doesn't make me hot and custom fit is perfect for my neck. Rachel R.  Verified 1/27/2026 I adjusted the height and firmness until it was right. No more pillow frustration. **GET YOUR ADJUSTABLE PILLOW NOW**  ## Extra Memory Foam Is Included ## Unlike most mass-produced pillows, the MellowFlex™ Pillow was designed with the input of licensed chiropractors. ## While other pillow companies just give you a surface to sleep on, the MellowFlex™ Pillow gives you the power to create the support your body actually needs to sleep properly. ## Now anyone can adjust their to just the right amount of fill and comfort! ## **Your Satisfaction is Our Priority** ## Try Mellow Hotel Pillow risk-free and if you don’t love it, we’ll fix it.  30-NIGHT BETTER SLEEP GUARANTEE Try the Flex Pillow yourself for up to 30 nights, and if you aren’t 100% satisfied, simply return it!  1-YEAR WARRANTY Each Flex Pillow pillow is proudly backed by a 1-year warranty.  FREE, FAST SHIPPING IN THE USA We also provide fast international shipping. Free shipping on qualifying offers only.  QUALITY PROMISE We control every step of the process to ensure a safe and high-quality product.  WORLD CLASS CUSTOMER SUPPORT We’re real humans, we’re quick, and we actually like talking to you!  MISSION-DRIVEN Our mission is to help millions of people enjoy the benefits of science-driven sleep support. Slide 1 of 8           "I love that I can actually adjust this pillow. I took some foam out and it immediately felt better on my neck. It’s soft, supportive, and doesn’t go flat overnight." Sarah L. Verified Customer 285 reviews (285) Flex Pillow $59.00 $74.99 A fully adjustable shredded memory foam pillow designed to give you the exact height and firmness you need for deeper, more comfortable sleep.  Adjust the Height & Firmness  Soft or Firm Support, It's Up To You!  MellowSoft™ Shredded Memory Foam  Includes Extra Foam  Hypoallergenic, Antibacterial & 100% Vegan  Recommended by Our Chiropractic Partners BUY MORE - SAVE MORE 1 PillowLimited Time Sale! This Deal Ends Soon. $49.99 $59.99 Pillow size StandardKing +2 Cooling Pillowcase $9.99 $34.99 2 Pillow Bundle$29.50 / Pillow Limited Time Offer! $58.99 $119.98 Pillow size #1 StandardKing #2 StandardKing +2 Cooling Pillowcases White StandardKing/Cali King $9.99 $34.99 BEST VALUE Buy 4 for $99!$22.25 / Pillow This offer ends this week! $88.99 $239.96 Pillow size #1 StandardKing #2 StandardKing #3 StandardKing #4 StandardKing +4 Cooling Pillowcases at 39.99 $39.99 $69.98 Add to Cart Out of Stock  30-day trial  hassle-free returns Overview Care Materials FAQ  "I love that I can actually adjust this pillow. I took some foam out and it immediately felt better on my neck. It’s soft, supportive, and doesn’t go flat overnight." Sarah L. Verified Customer reviews widget Be the first to write a review  Shauna H. 7/15/2026 I have been searching for years to find the perfect pillow The two king size pillows that I bought are hands down the very best. I just got them yesterday and I had the best night's sleep!  Cortney L.Verified 5/21/2026 My favorite pillow! This one pillow solved all of my problems and it can last a long time thanks to coming with fill. Item type: Standard  Melady R.Verified 4/10/2026 they are amazing super soft great for my neck perfect high Item type: Standard Tina P.Verified 9/21/2026 like pillow Item type: King Gina G.Verified 8/23/2026 Such fabulous quality and comfort beyond measure! Item type: King John F.Verified 8/18/2026 At first it seemed a little hard to get used to had to take quite a bit of stuffing out of the pillow, but when I had it adjusted to my desired firm it’s absolutely wonderful to sleep on. I’m now only using one pillow instead of two for the first time ever. Item type: Standard Diane F.Verified 8/14/2026 Love the pillow the softness, the comfy is really good and thank you for the relaxing sleep on the neck part it helps a lot!!! Item type: Standard Joel F.Verified 8/13/2026 Nice pillows 😎 Item type: Standard Victoria M.Verified 8/3/2026 I am in love with these pillows. Expensive? Yes. Worth it? Also yes. I've been struggling for years to find a replacement for my favorite pillows. I like my pillows firm and bordering on being more of a boulder than a pillow. These showed up already pretty firm so I tried them without adding any extra stuffing first. I ended up adding a little bit to each one and now they are perfect. I have no complaints about them being too hot either. I can not sleep unless I am on the verge of hypothermia an... Item type: King Kristy V.Verified 7/24/2026 Insanely comfortable and adjustable. Best pillow!! Item type: Standard Carl F.Verified 7/15/2026 These pillows are way too big. They have way too much foam inside of them and cause severe neck problems when sleeping with them. Item type: Standard Sandra E.Verified 7/5/2026 OK, I think it’s ridiculous to include that little bag of extra fluff because it’s very hard to add to the pillow. You just have blue fluff falling all over the place and I don’t think it made it any bigger. It was an OK sleep Item type: King Christie G.Verified 7/3/2026 I love love love this pillow! I took some stuffing out to my preferred squishy and it is perfect. I am a very light sleeper and this pillow has really helped staying asleep. It is super comfortable. I bought this with the cooling pillowcase and IMO is the dream combo :) The search for the perfect pillow is over FINALLY! Item type: King Adriana J.Verified 6/28/2026 A bit too high, had to adjust it..now great! Item type: King Celines M.Verified 6/27/2026 . Item type: King Jessica K.Verified 6/26/2026 I like the fact I can add or remove. It's a nice solid pillow. Item type: King Alexi H.Verified 6/23/2026 Would be better in the standard size Item type: King Jason W.Verified 6/22/2026 Pillow is super comfortable. Paired with the cooling pillow case makes for a great sleep. Item type: King Jorge C.Verified 6/6/2026 Pillows are super comfortable Item type: Standard Kelly H.Verified 6/4/2026 Not at all as good as any of the other pillows but not bad Item type: Standard Show more reviews  30 Day Money Back Guarantee! ### Have a Question See Our FAQs Q: What makes CloudAlign different? Q: How quickly will I notice a difference in my sleep? Q: How many should I order? Q: How do I wash it? Q: How do the three zones actually help me sleep better? Q: What if I try it and don't like it? Q: What's the real difference between the two heights, and how do I know which one I need? Q: Will it go flat or lose support after a few weeks? Q: Why did you work with chiropractors to create CloudAlign? Q: Will I have to pay any additional customs, duties or VAT fees when I receive my order? Q: Will you notify me by email when my order has shipped? Q: When can I expect my order? ### Click HERE to View FAQs » Q: What makes CloudAlign different? Q: How quickly will I notice a difference in my sleep? Q: How many should I order? Q: How do I wash it? Q: How do the three zones actually help me sleep better? Q: What if I try it and don't like it? Q: What's the real difference between the two heights, and how do I know which one I need? Q: Will it go flat or lose support after a few weeks? Q: Why did you work with chiropractors to create CloudAlign? Q: Will I have to pay any additional customs, duties or VAT fees when I receive my order? Q: Will you notify me by email when my order has shipped? Q: When can I expect my order? Support Returns Privacy Terms _About This Site_ Purchasing here is buying directly from CloudAlign Pillow, the inventors of this innovative solution. CloudAlign Pillow has partnered with GiddyUp, a curator of innovative products, to present a special offer that you won’t find anywhere else. To support these inventors, please consider buying your CloudAlign Pillow on this site, rather than 3rd-Party retailers. Copyright © 2025 GiddyUp. All Rights Reserved..  ### The Award Winning Pillow (Back In Stock) 50% OFF NOW 50% OFF NOW - Choosing a selection results in a full page refresh. - Opens in a new window. ## Express checkout Shopping Cart0 You’re **$100.00** away from **$0.99 Shipping** ## Your cart is empty How about these? 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