"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
Flex Pillow
$49.99
$74.99
Savings based on comparable value.Learn more
Pricing Disclosure
The listed comparable value represents the manufacturer's suggested retail price or the average retail price of similar products with comparable features, materials, and construction available from major retailers at the time of listing. Mellow's sale price reflects our direct-to-consumer pricing model, which eliminates traditional retail markups. Comparable values are reviewed periodically and may not reflect real-time pricing from all retailers.
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
A fully adjustable shredded memory foam pillow designed to give you the exact height and firmness you need for deeper, more comfortable sleep.
30-Day Trial
Hassle-Free Returns
Overview
Meet the mellow Flex Pillow, designed to give you a truly personalized sleep experience.
Unlike traditional pillows that are either too flat or too firm, this pillow lets you adjust the height and firmness by adding or removing shredded memory foam until it feels just right. The responsive fill gently molds to your head and neck, helping relieve pressure while maintaining support through the night.
Whether you prefer a higher, firmer pillow or a softer, lower profile, the mellow Adjustable Pillow puts you in control, so your pillow fits you, not the other way around.
Materials
Shredded Memory Foam Core
Fully adjustable fill designed to contour to your head and neck while staying breathable and supportive.
OEKO-TEX® Certified Cover
Hypoallergenic, breathable, and made without harmful chemicals.
Extra Foam Fill Included
Comes with a separate bag of additional foam so you can fine-tune comfort over time.
Care
The removable pillow cover is machine washable. Wash cold on a gentle cycle and tumble dry low.
Do not wash or dry the shredded foam core.
FAQ
How do I adjust the pillow?
Unzip the inner liner and add or remove foam until you reach your preferred height and firmness.
Who is this pillow best for?
It’s ideal for side, back, and combination sleepers who want customizable support.
Is this pillow soft or firm?
It can be either. The feel depends on how much fill you use,more fill for firmer support, less fill for a softer feel.
Does it sleep hot?
The shredded memory foam allows for airflow, helping reduce heat buildup compared to solid foam pillows.
Is it hypoallergenic?
Yes. The materials are hypoallergenic, antibacterial, and OEKO-TEX® Standard 100 certified.
"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
One Pillow. Your Perfect Fit.
Unlike traditional pillows that are one-size-fits-all, the mellow Flex Pillow lets you customize both height and firmness so it fits you exactly. Add or remove shredded memory foam until it feels just right, no flipping, no guessing, just personalized comfort.
Adjustable Height & Firmness
Unzip the pillow and add or remove foam to dial in your ideal support and loft.
Breathable, Plush Comfort
The flexible fill allows airflow for cooler sleep while staying soft, supportive, and pressure-relieving.
Support Where It Matters
Designed to help keep your head, neck, and shoulders aligned whether you sleep on your back or side.
Customer Reviews
Overall rating: 4.8 / 5 from 284 reviews.
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!
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.
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 and these are helping me achieve that nightly. Im going on a road trip in a few weeks and I will likely be taking these with me so I don't have to deal with hotel pillows.
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
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!
Exactly what I was looking for at a reasonable price!
Excellent experience from start to finish.
Shipping was fast, and communication was clear.
Very high-quality materials, great airflow, and perfect balance of support and comfort. Noticeable improvement in neck and shoulder comfort after the first night. Outstanding value for the price.
Got 2 king size pillows. First night to sleep on my husband and I both had a rough night. Too much stuffing! Removed a good amount of the stuffing, a garbage bag full from both pillows. Husband loves it but it’s just too stiff for me. Gave mine to my grandson and he seems to like it. I like a more plush soft pillow.
The pillow is perfect for those who need different types of pillow firmness. I bought two and put all the fluff in them which has its ups and downs.
I would recommend leaving the pillows as firm as they are when they come unless you are using it for a back pillow. Like when you are gaming in bed or reading a book.
At full firmness, it is not useable as a sleeping pillow or a pillow to hold. It can be good for those who need to prop up their legs when they sleep or between their legs for leg pains.
The pillows are amazing though! I love that we can change the firmness. I woukd recommend this to those in search of new pillows.
The pillow is great what I did to adjust was fame my mirror and remove filler until my head and neck were aligned. Works great. The pillow case also keeps my head cool I stopped waking up to flip the pillow because it's to hot. Getting better sleep. Thank you
I bought this pillow for my son, who is a side and stomach sleeper. He said he had to take out a lot stuffing to get it to a point that it was usable for him and it was very time consuming. He does like the ability to adjust it though, and once he was done, he said it was comfortable.
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