What is a mastectomy swimsuit, and do you actually need one?
Red Peony · October 1, 2026
Short answer: a mastectomy swimsuit is a swimsuit with pockets inside the bust to hold a breast form, plus a cut that covers more of the chest and underarm. You need one if you wear a form, or if regular swimsuits show more than you'd like.
What's different about it
From the outside, a good one looks like any other swimsuit. The differences are on the inside and in the cut:
- Pockets. A soft pocket on each side of the bust holds a breast form against your chest, so it stays where it should when you swim, bend down for a towel or climb out of the pool. Without a pocket, a form can float, slip or shift sideways.
- A higher neckline. So the top of the form, and any scar along the chest, stays covered when you lean forward.
- Armholes that sit closer to the body. Mastectomy and lymph node scars often run towards the underarm, which is exactly where ordinary armholes are cut away.
- More fabric where it counts. Many styles add a longer front panel or a skirt, which also helps if you had reconstruction using tissue from your tummy.
Who it's for
Women who had one breast removed and want both sides to look even under the fabric. Women who had both removed, whether they wear two forms or none. And women after reconstruction or a lumpectomy who simply like more coverage at the neckline and underarm. The pockets lie flat when they're empty, so you don't need to wear a form to wear the suit.
Can't I just sew a pocket into my old swimsuit?
You can, and some women do. It works best on suits that already have a lining and a fairly high neckline. The catch is that the rest of the suit was cut for a different chest: the neckline may gape once a form is in, and the armholes stay where they were. If your old suit already covers what you want covered, a pocket kit is a cheap fix. If it doesn't, a pocket won't change that.
What to look for
Pockets on both sides (useful after a single or double mastectomy), an opening that's easy to reach, a neckline that stays put when you bend, and fabric with enough body that it doesn't cling when it's wet. Our guide to choosing a mastectomy swimsuit goes through each of these.
Browse our mastectomy swimwear: one-pieces and tankinis, all with pockets on both sides.
This article is general information, not medical advice. Please ask your surgeon or care team about your own situation.
