first line period underwear

First Line Period 4.5" Trunks

Your signature briefs with absorbency for periods, pee, sweat, whatever. So you can, you know, feel ...

First Line Period Bikini

Leak protection made for real life.  The period bikini is our highest-absorbency style for peri...

First Line Period Boy Shorts

Periods can be such a drag but your underwear shouldn’t be. Our most-coveted boy short style, adapte...

First Line Period 9" Boxer Briefs

The longest inseam period boxer on the market. These full coverage wonders are here to put your over...