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Black Super Bikini Set

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Thinx underwear is not made or treated with PFAS

Thinx underwear is not made or treated with PFAS

what's inside

  • 3 Super Cotton Bikiniin Black

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size chart


Switch to period underwear for reusable protection that lasts all period long. This Set features three pairs of Thinx for All Super Cotton Bikini.

Thinx underwear is not made or treated with PFAS.


This style has a higher-cut leg with full lining coverage. It fits true to size, so we recommend ordering your usual size.

Wear these when you want a larger range of movement in the leg, like for yoga and low-intensity workouts.


  • body: 95% cotton 5% elastane
  • layer 1 (wicking): 100% polyester
  • layer 2 (absorbent): 100% polyester
  • layer 3 (barrier): 100% polyester, coated w/ breathable PU
  • polyester, polyurethane, Agion®, Lava XL-N®"
  • Thinx underwear is not made or treated with PFAS.

Our underwear is certified according to STANDARD 100 by OEKO-TEX:registered: [20.HUS.04850 | HOHENSTEIN HTTI]

care instructions

Wash before wearing. Hand wash or machine wash cold on a delicate cycle. Do not use bleach or fabric softener. Hang dry — no ironing please!

introducing Thinx for All

Thinx for All

Everyday period underwear made from comfy cotton, available in our most popular absorbency levels.

I love how full-coverage these bikini briefs are — they keep me feeling secure and I don't worry about leaking on my period.
Ally O., New Orleans, LA

how our period underwear works

Thinx - PDP - take the Know Your Flow quiz

find your style

Tell us a li'l bit about your flow, and we'll match you with the right pair!

Thinx - PDP - create a set

buy more, save more

Mix and match any Thinx undies — and you can save up to 20%.