What is in the 4-piece set?

Four modular foam pieces. Three combine into a center-opening sleeping pillow so weight sits on the thighs and surrounding areas, not on the buttocks.

How do I set it up in bed?

Leave a gap under the hips. Lumbar piece at the low back, U-shaped wedge under the thighs. Do not push the pieces together so the buttocks rest on foam. Only if your surgeon allows back-lying.

What else can the four pieces do?

Three pieces combine into a wedge for leg elevation or back support. The curved cushion is a toilet-seat pad. The center block is a footrest.

What is the difference between Darkgray and Lightgray?

Color only. Same four pieces, same Large size. Darkgray is ASIN B0GS4GH1ZH. Lightgray is B0GS4PSZLS.

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4 in 1 vs 5 piece BBL pillow

A 4-piece sleeping set and a 5-piece set are different kits. Neither is the 9-piece V-bed.

Four gray modular pieces — U-shaped thigh wedge, lumbar wedge, bolster — and a person lying with a gap under the buttocks.

Person on a bed with a small lumbar bolster and a large thigh wedge, a gap under the buttocks.

Four numbered pieces and two builds: a center-opening sleep setup and a continuous leg-elevation ramp.

Person on the modular set with the thigh wedge and lumbar piece spaced so the buttocks sit in the gap.

Two heights of the same setup; the lower frame adds a standard bed pillow under the upper back.

Four pieces versus five. The fifth piece is extra height, not a hole-fill.
Amazon listing brand on the 5-piece is GAB. Site brand stays LYXOMED.
Checkout on this page is the 4-piece set. The V-bed is a separate product.

Check today's price on Amazon

On Amazon list price: $69.99 as of 2 Sep 2026. Checkout on Amazon; price may vary.

For 4 in 1 vs 5 piece bbl pillow, checkout stays on Amazon.

What it is	4-piece modular BBL sleeping set
Listing image	Main wedge about 19.68 in (50 cm) wide
Foam	High-density foam
Parent ASIN	B0GZMSWZP1

4-piece sleeping set
Four pieces. A gap under the hips. Bed and car. Amazon listing brand CACLSF. Checkout on this page is this kit.
5-piece sleeping set
Five pieces. The fifth piece is extra height, not a hole-fill. Amazon listing brand GAB. Sibling ASIN B0H3P647MB. Not this CTA.
9-piece extra-thick V-bed
A different product for back-lying when a surgeon allows it. Not either sleeping-set SKU.

How it is designed

Four modular pieces. Three make a center-opening sleep setup: U-shaped wedge for the thighs, a smaller piece for the low back, empty middle.

The fourth piece is a curved toilet pad. The center block is a footrest. High-density foam so the buttocks do not hit the mattress.

Why this shape

Stacked bed pillows sink and close the hole you need under the hips.

If you close the gap, you are back on a surface. Leave the gap under the hips. Only if your surgeon allows back-lying.

What to skip

Do not sit, lie, or put pressure directly on the buttocks when that is the order (ASPS; Scripps Health).
Some written protocols forbid back-lying for weeks (Chicago Breast and Body: 4 weeks). Use the bed setup only if your surgeon allows that position.
Do not push the pieces together so the buttocks rest on foam. Leave the gap under the hips.

Questions people ask

What is in the 4-piece set?: Four modular foam pieces. Three combine into a center-opening sleeping pillow so weight sits on the thighs and surrounding areas, not on the buttocks.
How do I set it up in bed?: Leave a gap under the hips. Lumbar piece at the low back, U-shaped wedge under the thighs. Do not push the pieces together so the buttocks rest on foam. Only if your surgeon allows back-lying.
What else can the four pieces do?: Three pieces combine into a wedge for leg elevation or back support. The curved cushion is a toilet-seat pad. The center block is a footrest.
What is the difference between Darkgray and Lightgray?: Color only. Same four pieces, same Large size. Darkgray is ASIN B0GS4GH1ZH. Lightgray is B0GS4PSZLS.

Full specs · How we designed this pad · 4-in-1 vs 5-piece