What is this cushion for?

A two-piece foam pad with a hollow center. You sit or lie so the sacrum and tailbone rest in the gap, not on the foam. Blue and Gray on Amazon.

How do the two pieces work?

Two pads with straps. Slide them to set the center gap — listing images label a maximum of about 3.5 in. Use them together or as two separate pads.

Can I use it in a chair and in bed?

Yes. High-traction bottom for a bed or a chair. Same hollow center either way.

What is the difference between Blue and Gray?

Color only. Same two-piece pad, same hollow center, same gel-over-foam build.

On Amazon

Split seat cushion for tailbone

Two pads leave a hollow so the tailbone is not on the foam. That is offload, not a bedsore treatment.

Blue sacral-coccyx cushion with a hollow center, gel layer over foam, and a person lying so the pelvis sits over the gap.

Dimension diagram of the blue cushion: 16.93 inches wide, 17.91 inches deep, 3.94 inches at the back, 2.36 inches at the front, gel over foam, non-slip bottom.

Two blue pads joined by straps with a labeled center gap, and a diagram of the pelvis over the hollow versus on a flat surface.

Person sitting on the two-piece blue cushion on a bed, with labeled fit ranges from the listing image.

Two-piece split, not a one-piece donut.
Sit or lie so the sacrum and tailbone rest in the gap.
This is positioning. It is not a pressure-ulcer treatment.

Check today's price on Amazon

On Amazon list price: $49.99 as of 2 Sep 2026. Checkout on Amazon; price may vary.

For split seat cushion for tailbone, checkout stays on Amazon.

Build	Two modular pads with straps; hollow center
Labeled size	16.93 in wide × 17.91 in deep; back 3.94 in, front 2.36 in (listing images). Amazon details also list 19 × 19 × 4 in.
Foam	Memory foam, medium-soft, with gel pads
Parent	ASIN B0H5J1H4W7

How it is designed

Two-piece foam with a hollow center. Straps between the pads so you can slide the gap.

Thicker at the back than the front: 3.94 in and 2.36 in on the listing diagram. Gel over memory foam. Sit or lie so the sacrum and tailbone are not the load.

Why this shape

A flat pillow still puts the tailbone on foam. A one-piece donut has a fixed hole.

This is positioning. It is not a pressure-ulcer treatment.

What to skip

Do not treat this pad as a turning schedule. The 2026 NPIAP / EPUAP / PPPIA guideline: no support surface entirely replaces repositioning.
Do not leave one part of the body loaded without redistributing the pressure — that is the positioning problem the guideline describes.

Questions people ask

What is this cushion for?: A two-piece foam pad with a hollow center. You sit or lie so the sacrum and tailbone rest in the gap, not on the foam. Blue and Gray on Amazon.
How do the two pieces work?: Two pads with straps. Slide them to set the center gap — listing images label a maximum of about 3.5 in. Use them together or as two separate pads.
Can I use it in a chair and in bed?: Yes. High-traction bottom for a bed or a chair. Same hollow center either way.
What is the difference between Blue and Gray?: Color only. Same two-piece pad, same hollow center, same gel-over-foam build.

Full specs · How we designed this pad