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Your cart’s feeling a little empty.

But the perfect pair is waiting.

Back to School Shop

Packed schedules. New routines. Back to confidence with period protection that keeps up with everything on their agenda.

Buy any 3 for 15% off, buy 5+ for 20% off
Buy any 3 for 15% off, buy 5+ for 20% off
Buy any 3 for 15% off, buy 5+ for 20% off
Buy any 3 for 15% off, buy 5+ for 20% off
Buy any 3 for 15% off, buy 5+ for 20% off
Period Undies

Focus on school, not their period

Fit for every uniform and every flow. Each pair gives them the confidence they need to get through the day without worries of leaks and period what-ifs. Consider it the kind of protection you wish you had as a teen. Only cuter.

Period Sleep

Say yes to sleepovers

Never miss out on the fun of staying up all night and sleeping in all day. With 360° leak protection, Period Sleep is designed for tossing, turning, and most importantly: looking just like regular boxers and undies.

Leakproof for Dancers

Own every practice

From gym class to dance, our bulk-free, built-in period protection moves with them. So discreet under tights, they'll forget they're even wearing it.

Period Swim

Never miss a swim class

Dive in to back-to-school activities with protection that looks like their favorite swimsuit, but protects against period leaks and oh-no's. Loved for that perfect-fit feel and styles for every comfort level.

Go through the school day without leaks and without worries.

Carry this leak-saving period essential with you everywhere you go.

  • Our best-selling, everyday leakproof styles
  • Thin and discreet liner to feel just like regular underwear and swim
  • 100% reusable and machine washable, just like regular underwear.
Shop the Backpack Survival Kit

Kt is trusted by 2M+ Moms and Teens

“Bought this for my daughter, it fit well but most importantly is that she said it worked while she was on her period at camp, so I'll readily buy another!"

- Vanessa S.

"The best! Literally the only period underwear my teen will use. She loves the convenience and comfort of the Sleepover Short."

- Stacy K.

“Material is soft, sizing was spot on, and she says they feel just like normal underwear.” 

- Gwen M.

Try your first pair of underwear risk free for 30 days

Start the school year with confidence