Historical review: This article describes the XOcomfort Carbon Series pillow tested in 2019. We could not establish that the same pillow is currently offered; historical prices, guarantees and certifications should not be assumed current.
Our verdict
Our reviewer found the shredded foam soft to the touch but supportive and somewhat firm under the head. As a side sleeper, she felt it supported the space between her head and neck. Adjustable fill and a separate inner liner were practical advantages, while initial off-gassing was a drawback. We did not conduct a long-term cooling test.
Best fit: side sleepers who like adjustable, supportive foam. Think twice if: you are sensitive to new-foam odors or prefer a very soft, low pillow.
What we found in the original review
The foam was shredded and cross-chopped. Individual pieces felt light and soft, but together they made a supportive surface the reviewer described as leaning firm. The cover, zipper and foam appeared well made. A separate liner meant the outer cover could be removed without taking out loose foam.
There was some off-gassing on opening. Allowing a new foam product to air out according to its instructions can help; if odor persists or causes discomfort, consult the seller about its return policy.
Adjusting loft and support
The original pillow had a zippered cover and removable fill, allowing the user to lower its loft. The review listed a starting depth of about six inches and standard, queen and king sizes; these are historical specifications, not a promise about a current model.
Side sleepers generally need enough height to fill the space between shoulder and head. Back sleepers may prefer less loft, and stomach sleepers often need a lower profile. Adjust gradually and assess whether your neck feels comfortably aligned; shoulder width, mattress softness and preference all matter.
What about cooling?
The original product was marketed with cooling foam technology, though it was not described as cool to the touch. Our reviewer explicitly said more time was needed to evaluate cooling. We therefore cannot verify that it regulates temperature or sleeps cooler than a competing pillow.
The wider sleep setup matters too: room temperature, mattress protector, sheets and comforter can affect comfort. The original article also discussed related XOnano Smartfoam research separately; impact-sensing technology should not be confused with a tested pillow feature. Watch the video referenced in the original article.
How adjustable foam compares
| Type | Fit | Tradeoff |
|---|---|---|
| Adjustable shredded foam | Fill can be removed to alter loft | Adjustment takes time; new foam can smell |
| Solid foam | Consistent, shaped support | Usually less adjustable |
| Down alternative | Often soft and compressible | Support depends on fill |
Care and buying advice
Follow the specific pillow’s label: a removable cover does not mean its inner foam can be machine washed. Use a compatible pillow protector and dry fully after any permitted cleaning. The original review cited foam certification; verify current certification and the exact model rather than assuming a historical claim still applies.
We removed an old shopping link because it led to an unrelated mattress. If you find an XOcomfort listing, verify the seller, model, price, return window and instructions before purchase.
How to dial in an adjustable pillow
Start with your normal sleep setup. Put the pillow inside the pillowcase you actually use and lie on the mattress you sleep on. Mattress softness affects how far your shoulder sinks in, so a height that feels right on a display bed may not feel the same at home. Try your usual side and back positions before removing any fill.
Make small changes. If the manufacturer permits fill removal, unzip the inner liner and take out a small handful at a time. Close it, redistribute the remaining fill and try the pillow again. Keep the removed material clean and dry in a sealed bag so you can put some back if you take out too much. Follow the product's instructions and keep loose fill away from children and pets.
Check the feel in each position. A side sleeper may need more loft to fill the space between the mattress and head; a back sleeper may find a lower setting more comfortable. Look for a position that feels relaxed rather than forcing the head up or letting it drop. If you switch positions, aim for a compromise you can comfortably use in both. There is no single correct height for every body or mattress.
Give the adjustment a fair trial. A new pillow can feel different from one you have used for years. Note whether the loft remains comfortable after you settle in, whether fill shifts toward the edges and whether you wake wanting more or less support. Make one adjustment at a time and check the seller's return deadline. If a pillow causes discomfort, stop using it; persistent symptoms are a reason to speak with a healthcare professional.
Compare the whole purchase. Look for a removable, washable outer cover, the exact pillow dimensions, replacement-fill availability and the cost of returns. Some adjustable pillows use a separate inner liner, as the historical XOcomfort sample did; others expose loose fill when the cover is opened. Confirm the construction and care instructions for the model being sold today.
Frequently asked questions
Is the pillow adjustable?
The 2019 sample had removable shredded fill and a zippered cover. Verify any current listing.
Is it suitable for side sleepers?
Our side-sleeping reviewer found the sample supportive. The right loft depends on your body and mattress.
Does it stay cool?
Our reviewer did not test cooling long enough to reach a conclusion.
Can the whole pillow be washed?
Do not assume so. Check the specific instructions for the cover and foam.