First Line Leakproof Bikini
Like the arid high plateaus of the Gobi desert, First Line keeps you dry and comfortable while you're on the move. With built in leak protection for light days and incontinence you can say goodbye to pads, tampons, and menstrual cups.
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.
- Looks and fits just like regular TomboyX Underwear
- 95% OEKO-TEX®-certified cotton, 5% spandex
- Holds 8 tsps of liquid
- Smooth, durable flatlock seams won’t irritate or chafe
- Machine wash cold in a mesh bag, line dries overnight. Avoid machine drying.
HUMAN-FRIENDLYOur cotton underwear is Oeko-tex 100 certified—a highly-regarded international standard for non-toxic fabrics.
Fabrics & Technology
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First Line Leakproof
Your first line of defense — our classic cotton armed with leak protection for light period days and incontinence.Shop First Line