L-Shaped Memory Foam Seat Cushion
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A one-piece seat cushion with a contoured seat and a ribbed backrest, about 15.7 × 17.3 × 14.6 in (40 × 44 × 37 cm). A cutout where the seat meets the backrest keeps the tailbone clear of the seat, and it sits on office chairs, dining chairs and car seats.
- Seat and backrest — one L-shaped piece, so the back support can't slip down
- Tailbone cutout — an opening at the back of the seat
- Contoured seat — a shaped hollow with a raised front edge
- Washable cover — the knit cover zips off for machine washing
- Four colors — black, green, cream white or dark gray
Muto Space chooses pieces that make a workspace calmer to sit in. It makes the chair you already own a better one.
| Dimensions | About 15.7 × 17.3 × 14.6 in / 40 × 44 × 37 cm |
| Material | Foam core · knit cover |
| In the box | 1 seat cushion with cover |
| Care | Cover zips off · machine washable |
Free U.S. shipping on every order, no minimums. Ships within 1–2 business days and typically arrives in 6–9 business days via USPS, UPS, or FedEx.
You'll get a tracking link by email as soon as it ships. Questions or delays? Email support@mutospace.com. Full Shipping Policy →
At Muto Space, we believe shopping for the space you call home should feel effortless. That's why every order is backed by the Muto Space Guarantee.
Returns are accepted within 30 days, no restocking fees, and refunds land within 7 business days. Full returns policy →
Seat and back
One piece, nothing slides
The seat and ribbed backrest are a single L-shaped cushion, so the back support stays where you put it.
Tailbone cutout
Room at the back
A cutout where the seat meets the backrest keeps your tailbone off the seat surface.
Any chair
Desk, dining chair or car
Sized for standard office chairs, dining chairs and car seats.

Size
Dimensions
Sized for standard office, dining and car seats.
- Width
- About 15.7 in
- Depth
- About 17.3 in
- Height
- About 14.6 in
Before you buy
Questions about this piece
Will it fit my chair?
It's about 15.7 in wide and 17.3 in deep, sized for standard office chairs, dining chairs and car seats.
Does it include a backrest?
Yes. The seat and backrest are one piece.
Is the cover washable?
Yes. The knit cover zips off for machine washing.
What color is White?
It's a warm cream white rather than bright white.
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A calmer space
Small changes to your environment create real shifts in how you feel and work. Every piece we carry is chosen with that in mind. Not to decorate, but to improve.