Heavy Period Kit - Bikini - Knix

The 9 best period underwear, according to experts

The perfect kit to get your teen ready for their first period. Everything they need for their lightest days and heaviest nights.

Teen First Period Kit

We make amazing wireless bras, period proof underwear, sports bras, loungewear and more. Designed with your comfort in mind.

Ultra Leakproof Zones+ Bikini

A NEW classic style with something ✨special✨ - Knix Teen

We make amazing wireless bras, period proof underwear, sports bras, loungewear and more. Designed with your comfort in mind.

Everyday Period Kit - High Rise

We make amazing wireless bras, period proof underwear, sports bras, loungewear and more. Designed with your comfort in mind.

Heavy Period Kit - Bikini

14 Period Products to Make Tweens' and Teens' Cycles Easier

We make amazing wireless bras, period proof underwear, sports bras, loungewear and more. Designed with your comfort in mind.

Heavy Period Kit - Bikini

We make amazing wireless bras, period proof underwear, sports bras, loungewear and more. Designed with your comfort in mind.

Ultra Leakproof Zones+ Bikini

How to Shop the Knix Warehouse Sale for Deals on Period Underwear

Heavy Period Kit - High Rise - Knix

Period Kits for Teens & Tweens