First Line Leakproof Bikini - Night Sky Rainbow-Underwear-TomboyX
First Line Leakproof Bikini - Night Sky Rainbow-Underwear-TomboyX

First Line Leakproof Bikini LC - Night Sky Rainbow

Regular price $25.00 Sale price$9.99 Save 60%
FINAL SALE. No returns or exchanges.

Color: Night Sky Rainbow
No leaks, no mess, no worries. First Line is here to keep you dry and on the go (or on the couch).

With built-in leak protection for light days and incontinence, you’ll be able to rest, move, and breathe easy. And hey — they’re antibacterial and odor-repellent, all while looking and feeling just like your favorite Tomboys. Plus, the outside fabric is also leak resistant for even more protection.

First Line underwear is made with OEKO-TEX® 100 Certified fabrics which are free from chemicals that are toxic to humans including PFOS and PFOA chemicals that have been shown to cause infertility or cancer. Learn more.

  • Fit-tested on all body types, sizes 3XS-6X
  • Looks and fits just like regular TomboyX Underwear
  • Body: 95% OEKO-TEX Certified cotton, 5% spandex
    Liner: 90% polyester, 10% spandex
  • Holds 8 tsps of liquid
  • Signature stay-put rainbow waistband
  • Smooth, durable flatlock seams won’t irritate or chafe
  • Machine wash cold in a mesh bag, line dries overnight. Avoid machine drying.
Measure your chest at the fullest point to determine your size. If you are between sizes use the under bust measurement or size down.

Measure your hips around the fullest part of your hips and bottom while keeping your feet together.  Keep the tape measure parallel to the floor and don’t pull too tight! 

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Designed in Seattle, WA Since 2013

TomboyX builds silky-soft and long-lasting premium underwear for all bodies. We're committed to designing inclusive and sustainable products that help our customers feel comfortable in their own skin.

TomboyX Fit Guide