A Pillow Without Polyester Fill: What's Inside MOSO
Looking for a pillow without polyester? Here's what most pillows are filled with, what MOSO uses instead (viscose made from bamboo), and why it matters.
Bamboo Pillow vs Memory Foam: An Honest Comparison
"Bamboo pillow vs memory foam" sounds like a simple question. It isn't, because a lot of "bamboo pillows" are memory foam. Here's how the two compare, and why we chose viscose made from bamboo.
First, what "bamboo pillow" usually means
In most listings, "bamboo" describes the cover, not the fill. A reviewer who tested seven bamboo pillows over 14 months reports that most were shredded memory foam inside, with a bamboo-derived rayon or viscose cover. Their conclusion: there's "no such thing as a 'bamboo pillow' in any meaningful sense" in that group (bambooscope.com). Another review site argues that the label is the tell: check whether the listing names the actual fiber (lightsoutbedding.com). Our label-reading guide walks through it.
So the real comparison is usually fiber fill vs foam fill. MOSO is fiber fill: viscose made from bamboo, inside and out.
Memory foam: solid vs shredded
Memory foam comes two ways:
- Solid foam: one shaped block. Consistent and often contoured.
- Shredded foam: loose pieces you can usually add or remove to adjust height.
How they handle heat
This is where fill type matters most. Pillow Guru: "airflow through shredded fill is the single biggest practical factor in whether a pillow sleeps hot," and solid memory foam traps heat because air can't move through it (pillow-guru.com). Good Housekeeping's testers note that memory foam pillows tend to run warm compared with open-cell latex (goodhousekeeping.com).
MOSO's fill is fiber, which air moves through, and it's designed to sleep cool. The bamboo charcoal and tourmaline convert your body heat into far-infrared energy, which you don't feel as heat, and reflect it back to your body. It's a cool pillow. More on that on our science page.
Feel and support
- Memory foam has that slow, sink-in feel and holds a shaped profile. If you like a contoured pillow that cradles your head, foam does that well.
- MOSO is medium firm "with a soft hand." It sits "at a lower profile than a traditional down pillow," and its dense fill "holds a steady height all night instead of puffing up or flattening out." A 2-inch gusset helps it hold loft (product page).
Feel comes down to preference. Ours is medium firm with a soft hand.
Side-by-side
| Solid memory foam | Shredded memory foam | MOSO Black Performance Pillow (fiber fill) | |
|---|---|---|---|
| Fill | One foam block | Loose foam pieces | Viscose made from bamboo, with bamboo charcoal and tourmaline |
| Adjustable height | No | Usually (add or remove fill) | No; fixed fill weight (1000 g Queen, 1440 g King) |
| Airflow | Traps heat (Pillow Guru) | Better than solid (Pillow Guru) | Fiber fill, designed to sleep cool |
| Feel | Slow sink, contoured | Shapeable | Medium firm, soft hand, lower profile |
| Polyester | Varies; check the label | Some include microfiber; check the label | None in the fill or the ticking |
Competitor facts come from the cited reviews; check each product's own listing before you buy.
Price and value
MOSO is $109 for Standard/Queen and $119 for King. For that, you get a fiber fill of viscose made from bamboo, with bamboo charcoal and tourmaline, no polyester, and a gusseted build that holds a steady height.
Who should pick which
Pick MOSO if you want a pillow that's designed to sleep cool, with a dense fill that holds a steady height all night. It's medium firm with a soft hand for back, side and combination sleepers, with no polyester and a fiber fill instead of foam.
Pick memory foam if you love a slow-sink, contoured feel.
Not sure what height you need? Read Pillow Height for Side and Back Sleepers.
Where MOSO fits
MOSO is a Denver company, and every MOSO Black Performance Pillow is assembled and finished in Denver. Queen is $109 and King is $119 (2-packs $169 and $179). Charcoal or Silver.
Between Centennial and Westminster, free same-day hand delivery runs 7 days a week: orders placed by 1 PM MT are delivered the same day, per our shipping policy. Elsewhere in the U.S., standard shipping is free on orders over $99. New customers: HELLOMOSO takes 10% off.
Get the MOSO Black Performance Pillow →
More reading: Cooling Pillow for Hot Sleepers · A Pillow Without Polyester Fill · Bamboo Charcoal Pillow
— Team MOSO
FAQ
Is a bamboo pillow the same as memory foam?
Often, yes. Many "bamboo pillows" are memory foam inside with a bamboo-derived cover. Check the fill. MOSO's fill is viscose made from bamboo, not foam.
Bamboo or memory foam for hot sleepers?
It depends on the build. Reviewers point to airflow as the biggest factor, and solid foam traps heat. MOSO's fiber fill is designed to sleep cool.
Can I adjust the height of a MOSO pillow?
No, and that's by design. It has a fixed fill weight and holds a steady height night after night, so there's nothing to add, remove or reshape.
Is MOSO softer or firmer than memory foam?
MOSO is medium firm with a soft hand and a lower profile than a traditional down pillow. Memory foam ranges from soft to firm depending on the model.
Does MOSO have polyester?
No. There's no polyester in the fill or the ticking, and no microplastics.
- Tags: materials
