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Sale

teen-april-colors-hero

teen-april-colors-hero

Bring on spring colors

Your teen’s favorite period undies, now in fresh new shades.

Shop Teen Period Undies

Shop by Category

teen-period-undies-feb

Teen Period Undies

Teen Period Kits

Teen Period Kits

Teen Leakproof Thigh Savers

Teen Leakproof Thigh Savers

Teen Period Swim

Teen Period Swim

Teen Period Activewear

Teen Period Activewear

Kit for Every Flow Transparent - April

Kit for Every Flow Transparent - April

A Kit For Every Flow

Not sure where to start? Kits make it easy to get everything your teen needs all in one place.

First Period Kit

Get your teen feeling confident for their first period.

Teen Starter Kit

All the protection they need for light to heavy days.

Overnight Kits

A restful night’s sleep is a few clicks away.

Shop All Kits

And more kits that make it easy to bleed confidence.

Ways to save

Teen Bundle & Save Mobile

Bundle & Save

Buy 4+ Save 15%, Buy 7+ Save 25%

Teen Save on Period Kits Jan

Save on Period Kits

Save up to 25% off when you buy a curated Period Kit.

Earn points with Knix Rewards

Earn points with Knix Rewards

Spend $1, earn 1 point every time you shop. Redeem $10 every 100 points.

Teen Light Flows

Light Flows

Absorbs light flows, sweat, and discharge.

Teen Medium Flows

Medium Flows

For medium period days and sweat.

Teen Heavy Flows

Heavy Flows

Designed for heavy period days & overnight protection.

Some Periods Slider

Some Periods Slider

Our very first

children’s book!

Our little sister, Kt, created a book to let children know that periods are completely normal.

Teen Testimonial

Teen Testimonial

“My daughter absolutely loves the underwear!”

Lauren S.

Some Periods Slider

Some Periods Slider

Our very first

children’s book!

Our little sister, Kt, created a book to let children know that periods are completely normal.

Teen Testimonial

Teen Testimonial

“My daughter absolutely loves the underwear!”

Lauren S.

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Teen Best Sellers

Shop All

Teen First Period 7-Pack - Bikini

Teen First Period 7-Pack - Bikini

Teen Period Swim Sport One-Piece

Teen Period Swim Sport One-Piece

+1

Teen Leakproof UltraThin No-Show Underwear Bikini

Teen Leakproof UltraThin No-Show Underwear Bikini

+5

Teen Super Leakproof™ Sleepover Short

Teen Super Leakproof™ Sleepover Short

+7

Teen Super Leakproof™ No-Show Underwear 4-Pack - Boyshort

Teen Super Leakproof™ No-Show Underwear 4-Pack - Boyshort

Teen Light Leakproof No-Show Underwear 4-Pack - Bikini

Teen Light Leakproof No-Show Underwear 4-Pack - Bikini

Teen Period Swim Short

Teen Period Swim Short

+1

Teen Super Leakproof™ No-Show Underwear Bikini

Teen Super Leakproof™ No-Show Underwear Bikini

+11

Trending Now

Teen Period Swim Sport One-Piece

Teen Period Swim Sport One-Piece

+1

Teen Super Leakproof™ No-Show Underwear Bikini

Teen Super Leakproof™ No-Show Underwear Bikini

+11

Teen Super Leakproof™ Sleepover Short

Teen Super Leakproof™ Sleepover Short

+7

Teen Period Swim Board Shorts

Teen Period Swim Board Shorts

+1

Teen Leakproof Thigh Saver®

Teen Leakproof Thigh Saver®

Teen Leakproof Cotton Underwear Bikini

Teen Leakproof Cotton Underwear Bikini

Teen Heavy Period Kit - Bikini

Teen Heavy Period Kit - Bikini

Long Live Tankini Summer Period Swim Set

Long Live Tankini Summer Period Swim Set

Teen Light Leakproof No-Show Underwear Bikini

Teen Light Leakproof No-Show Underwear Bikini

+17