Home / Coccyx Cushion / AtlasSeat™ Coccyx Seat Cushion, Memory Foam
Man sitting on the AtlasSeat cushion at his desk
AtlasSeat memory foam seat cushion with rear cutout
AtlasSeat™ Coccyx Seat Cushion, Memory Foam
Close-up of the AtlasSeat mesh cover and dotted non-slip base
Top view of the AtlasSeat cushion placed on an office chair
How to set up the AtlasSeat cushion in three steps
AtlasSeat approximate dimensions: 45 x 36 x 6 cm
AtlasSeat on a home office chair, car seat, gaming chair and dining chair

AtlasSeat™ Coccyx Seat Cushion, Memory Foam

$59.99 $34.99Save 42%
  • U-shaped cutout at the back
  • Memory foam seat, 6 cm / 2.4 in thick
  • Dotted non-slip base grips the chair
  • Removable, washable cover
  • Fits office, car, gaming, dining chairs

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Shipping & returns +

Standard Shipping: free, 8 to 15 business days after dispatch.
Express Shipping: $4.80, 5 to 8 business days after dispatch.

Orders are processed within 1-3 business days. You have 30 days to return it. See our Refund Policy.

FAQs +
The cushion measures about 45 x 36 cm (17.7 x 14.2 in) and 6 cm (2.4 in) high. Measure your seat before ordering. It works on office chairs, car seats, gaming chairs and dining chairs.
It is memory foam: it shapes to you as you sit, and the cutout at the back means that area sits over open space instead of foam.
Place it on the seat with the cutout facing the backrest, then sit all the way back.
Yes, by the cushion's height, about 6 cm (2.4 in). If your desk feels high afterwards, lower your chair a little.
You have 30 days to send it back for a refund, and standard shipping is free. See our Refund Policy for the full terms.
Yes. The cover comes off and goes in the wash. Let it dry fully before putting it back on the foam.
At 45 x 36 cm it fits most car seats, and the dotted base grips there too.

SEE IT IN USE

Keep your chair. Change what you sit on.

You do not need a new chair. Drop AtlasSeat™ on the one you have, cutout toward the back, and sit.

WITH AND WITHOUT

Same chair. Different story.

The pressure under your tailbone builds up silently over hours. AtlasSeat™ redistributes it with a cutout at the base and high-density memory foam that holds its shape all day. Not just the first few minutes. Works on any seat you already use.

AtlasSeat™ Coccyx Seat Cushion, Memory Foam — Same chair. Different story.

Illustrative comparison.

HOW IT WORKS

The cutout is the point.

A flat seat presses straight up into your tailbone. The open U at the back leaves that spot over open space, while the foam carries your weight around it.

Top view of the AtlasSeat cushion showing the rear U-shaped cutout
  • Rear cutout at the tailbone area
  • Memory foam that shapes to you
  • Grip base that stays where you put it

A CLOSER LOOK

Mesh on top. Grip underneath.

The cover is mesh, so the air moves instead of sitting between you and the foam.

Mesh top and dotted non-slip base of the AtlasSeat cushion
  • Textured mesh cover, removable
  • Dotted non-slip base
  • Memory foam core

COMPARE

Not all cushions are built alike.

Comparison between a flat cushion and the AtlasSeat coccyx cushion

FITS YOUR SETUP

One cushion. Four seats.

Light enough to carry from the desk to the car.

AtlasSeat™ Coccyx Seat Cushion, Memory Foam, home office
Home office
AtlasSeat™ Coccyx Seat Cushion, Memory Foam, car
Car
AtlasSeat™ Coccyx Seat Cushion, Memory Foam, gaming chair
Gaming chair
AtlasSeat™ Coccyx Seat Cushion, Memory Foam, dining table
Dining table

What our customers say

I sit for most of the day and my chair always felt way too firm after a few hours. This adds enough cushioning without feeling like I'm sinking into it. Honestly surprised by how supportive the foam feels.

Daniel M. — Austin, TX

Was expecting something really soft but it's actually quite supportive, which I prefer. It keeps its shape even after I've been sitting on it for hours. Much better for my home office setup.

Chris W. — Manchester, UK

The biggest thing for me is that it actually stays put. I've had another cushion that moved every time I got up. This one feels stable on the chair and the cutout at the back makes sitting for longer stretches much more comfortable.

Melissa K. — Denver, CO

I work from home and can easily spend 7 or 8 hours at my desk. I've been using this for a couple of weeks now and I notice I'm not constantly shifting around trying to get comfortable. Fits my office chair nicely too.

James R. — Bristol, UK

At first I thought it might be a little too firm, but after a full day of using it I understood why. It supports you instead of just flattening out. I also like the extra bit of height it gives my chair.

Rachel T. — Portland, OR

Had a cheaper cushion before this and it basically went flat. This feels completely different. The foam is dense but still comfortable and it comes back to shape when I stand up. Feels much better made.

Adam P. — Chicago, IL

Didn't really want to replace my whole desk chair, so I tried this first. Glad I did. It gives me a much nicer sitting position and doesn't feel bulky or awkward on the seat.

Sophie H. — London, UK

I bought it mainly for longer gaming sessions and it's been solid. Doesn't make the seat feel cramped and I like that the cushion stays underneath me instead of slowly sliding forward.

Kevin B. — Seattle, WA

I originally got it for my office chair but I've started taking it with me on longer drives too. It's light enough to move around easily and the cover being removable is a nice touch. Simple product but very useful.

Laura S. — San Diego, CA

READY WHEN YOU ARE

Sit on something made for sitting.

$59.99$34.99

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