Decor & Everyday
  • Navy contoured seat cushion with gray mesh insets and an open cut-out at the back, on a pale oak surface
  • Black seat cushion on a home desk chair seen from behind, cut-out against the seat back, facing an oak desk
  • Top-down view of the black seat cushion measuring 17.7 in (45 cm) wide and 13.8 in (35 cm) deep, 2.0 in (5 cm) thick
  • Hand lifting the corner of the upside-down seat cushion to show its light-gray non-slip dotted base
  • Black seat cushion on a beige leather car seat seen through the open driver's door, for desk chairs and car seats
  • Side-on view at bench level of the black seat cushion, higher at the back and lower at the front
  • Raking-light macro of the black honeycomb mesh top curving into the cut-out, breathable mesh top
  • Overhead flat lay of the unzipped black cover beside the white slow-rebound foam core with a hand pressing into it
  • Top-down view of the seat cushion in Navy and Black side by side
  • Person working on a laptop at a kitchen table in morning light, sitting on the black contoured seat cushion
  • Hand setting the black seat cushion on a desk chair in evening lamp light, cut-out toward the chair back
  • Person sitting on the black seat cushion on a metal bleacher at an overcast autumn soccer game
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Contoured Seat Cushion with Tailbone Cut-Out

Contoured Seat Cushion with Tailbone Cut-Out

4.8 (120)
$44.99 USD
$44.99 USD
Sale Sold out

A contoured foam seat cushion with an open cut-out at the back, a zip-off cover and a non-slip base for desk chairs and car seats.

At a glance

  • An open U-shaped cut-out at the back leaves the tailbone area clear as you sit.
  • Thicker at the back and lower at the front, so your legs stay free at the front edge.
  • A dotted non-slip base keeps the cushion from sliding around on the seat.
  • The cover zips off along a hidden side zipper, so you can wash it.
Color: Navy
  • Free US shipping Arrives in 7–9 days
  • 30-day money-back guarantee Free returns
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“I bought it because my tailbone hurts from sitting for a long time. It seems pretty good so far, but I'll need to sit for a while longer to know for sure.” Anonymous customer Read all 120

Product details
This is a contoured seat cushion for a desk chair or a car seat. A flat cushion presses evenly everywhere, so this one is shaped instead. Seen from above it has two rounded sides, an open U-shaped cut-out in the back edge that leaves the tailbone area clear, and a shallow dip at the front for your legs.

Inside is one slow-rebound foam core. It gives under you, then slowly returns to shape after you stand up. The cushion is thicker at the back and slopes lower toward the front edge. The cover is 100% polyester. The Black cushion has a honeycomb mesh top, and the Navy has a smooth top with mesh in the two center dips. The underside is gray fabric with small raised dots that grip the seat.

Place it with the cut-out at the back, toward the seat back. There is nothing to assemble. To clean it, open the hidden zipper on the side, slide the foam core out and wash the cover on its own. Full measurements are in the specifications below.

Specifications
Size
17.7 W × 13.8 D × 2.0 H in (45 × 35 × 5 cm)
Shape
U-shaped, with an open cut-out at the back and a shallow dip at the front
Profile
Thicker at the back, sloping lower toward the front
Filling
Slow-rebound foam core
Material
100% polyester cover, slow-rebound foam core
Cover
Removable, with a hidden side zipper
Top
Black: honeycomb mesh. Navy: smooth fabric with gray mesh in the center dips
Base
Gray fabric with small raised non-slip dots
Colors
Navy, Black
Use
Desk chairs, office chairs and car seats
Assembly
None
Care
Unzip and wash the cover on its own; keep the foam core dry
Shipping weight
About 1.08 lb (492 g)
In the box
1 cushion, foam core inside its cover

Shipping & returns

Shipping Free on every order to all 50 U.S. states and Washington, D.C., with tracking. Arrives in 7–9 days if you order today.

Returns Not right for your home? Email support@cornicehome.com within 30 days of delivery to return it for a full refund. Returns are free, and there are no restocking fees.

Shipping policy · Return & refund policy

View full details

What customers say

4.8 out of 5 · 120 ratings

  • Excellent product, good quality, and it arrived quickly. I recommend it!

    Anonymous customer

  • I bought this because I have a problem with my buttocks bulging while driving, and I'll leave another comment later to share how it works. 😂

    Anonymous customer

  • The delivery was as expected, without any issues.

    Anonymous customer

  • When i got the package i was surprised how small it was, but then opened it and realized it's folded in half for shipping. first impressions are that it's a great cushion. i like it better than the one i bought at walmart for three times the price. recommended.

    Anonymous customer

  • Product received as described. promptly shipped and received.

    Anonymous customer

  • The packaging is compact and neat. An excellent pillow, comfortable to sit on. I recommend it.

    Anonymous customer

  • Muito bom.

    Anonymous customer

  • Excellent, just as described in the description, it also arrived quickly.

    Anonymous customer

  • I used to have pain in my waist and hips from sitting at my desk for long periods of time, but after switching to this cushion, the pressure is distributed and it's much more comfortable. It has just the right amount of firmness, so it doesn't sink in too much, and my posture becomes more stable. I'm very satisfied with the quality for the price.

    Anonymous customer

  • Very comfortable and also of good quality

    Anonymous customer

  • I used it as a chair cushion. The cushioning is good.

    Anonymous customer

  • 두둠하니 좋아 보입니다~

    Anonymous customer

  • It arrived 👍 the sponge is very simple, another store has better quality.

    Anonymous customer

  • A pillow suitable for my issues excellent product

    Anonymous customer

  • Beautiful material, very comfortable and compact for commuting and traveling, I recommend it.

    Anonymous customer

  • Very satisfied

    Anonymous customer

  • It arrived on the expected date 👍

    Anonymous customer

  • As described . looks to be memory foam.

    Anonymous customer

  • Received in time. Thanks

    Anonymous customer

  • Feels okay. it seems to be a bit thinner than store presentation/pictures. whish they were thicker.

    Anonymous customer

  • Perfect, very comfortable Fast delivery I recommend the pillow

    Anonymous customer

  • Comfortable cushion. I weigh 135 kg. Sedentary work. Started using it. The tailbone pain stopped. It became softer and more comfortable to sit on. It holds its shape well. For my weight, I would like it to be a bit thicker. But even with this cushion, it's much better. I recommend it.

    Anonymous customer

  • Parfait je recommande

    Anonymous customer

  • It arrived really quickly, I use it and it's comfortable and stylish, which is fun. Thank you.

    Anonymous customer

  • super comfortable

    Anonymous customer

  • cumple su función pero según las dimensiones de la persona puede no ser suficiente

    Anonymous customer

  • The size is really big even for men, so I like it even more. The size is really big, even for men, so I like it even more. It's soft and fluffy, and the split design is really nice for the hips and tailbone. The soft, split shape is good for my anus and tailbone. Good, nice~ very good~

    Anonymous customer

  • Very good material. Very good product. Very fast delivery.

    Anonymous customer

  • I bought this because I drive for a long time and my right hip hurts, but when I use it, the height of the driver's seat increases, so even when I lower it to the maximum, it's still too high. It seems like my butt hurts less when driving long distances.

    Anonymous customer

  • I no longer mind sitting for long periods of time, and I like the color.

    Anonymous customer

What customers say

4.8 out of 5 · 120 ratings

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The details

  1. Room at the back

    A U-shaped cut-out in the back edge leaves the tailbone area open, with a rounded side under each hip.

  2. Shaped to the seat

    It slopes gently from a thicker back to a lower front, with a shallow dip at the front edge for your legs.

  3. Springs back slowly

    The slow-rebound foam core gives under you, then returns to its shape after you stand up.

  4. Stays where you put it

    Small raised dots on the gray underside grip a desk chair or a car seat.

Black seat cushion on a home desk chair seen from behind, cut-out against the seat back, facing an oak desk

How it compares

Add to cart
Cornice Home Typical alternatives
Open cut-out at the back
Higher at the back, lower at the front Usually flat
Non-slip dotted base
Cover zips off for washing Often sewn shut
Mesh on the top Solid plush fabric is common

Questions

Contact us

What size is it?
17.7 in wide × 13.8 in deep × 2.0 in thick. Check that your seat is at least that wide and deep.

Which way does it go on the seat?
With the U-shaped cut-out at the back, toward the seat back, and the lower edge with the shallow dip at the front.

What is the filling?
One slow-rebound foam core. It gives slowly under you and returns to shape after you stand up.

Can I wash it?
Yes, the cover. Open the hidden zipper on the side, slide the foam core out and wash the cover on its own.

Will it slide on a car seat?
The underside has small raised non-slip dots that grip the seat, so it stays in place on leather and fabric.

What is the difference between Navy and Black?
Navy has a smooth navy top with gray mesh in the center dips and gray sides. Black is all black, with a honeycomb mesh top.

Can I use it on a desk chair and in the car?
Yes. It is made for desk chairs, office chairs and car seats.