No leaks, no mess, no worries. First Line is designed to help keep you dry and on-the-go with confidence. With built-in leak protection for light days or incontinence, you’ll be able to relax, move, and breathe easy. The First Line Period 4.5" Trunk features a floating gusset that can fit a pad with wings for some extra coverage when you need it. Finished with water resistant foldover elastic and threads. Constructed with a new and improved wider and longer pad for increased absorbency. And, you can machine wash and dry without a fuss.

First Line underwear is made with OEKO-TEX® 100 Certified fabrics which is one of the world's best-known labels for textiles tested for harmful substances. Learn more about how we avoid chemicals in our products.

Fit-tested on all body types and all our sizes
95% OEKO-TEX Certified cotton, 5% spandex
Lining: 89% Polyester, 11% Spandex
Inner Floating Liner: 91% Polyester, 9% Spandex
Absorbs up to 6 tsps of liquid
Signature stay-put silky soft waistband
Mid rise fit, 4.5" inseam
Smooth, durable flatlock seams won’t irritate or chafe
Machine wash cold, tumble dry low.

4.5" Trunks - Black Rainbow

Designed in Seattle, WA Since 2013

tomboyx Fit Guide