Period Panties
& Teen Underwear

The best period underwear for teens
Your New Favorite

We make bras and period underwear designed to deal with all the annoying stuff that comes with being a teen β€” so you can focus on being awesome.

Knixteen's best teen panties
Oh No Proof

Miracle period-proof panties that protect you from menstrual leaks, odor, and moisture. Bye bye stains; hello comfort.

The most comfortable teen underwear
Bra Bosses

Cute and comfortable teen bras that are so not boring. You’ll love them so much you won’t ever want to take them off.

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Take back the bra

We worked with five of your favorite teens, including Jazz Jennings and Mo’ne Davis to design five different bras that we know you’ll love. It’s time for teens to take back the bra!

Shop Bras
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Period Panty Questions?

We’re Leaking the Answers

  • A brand built for teens, with products designed to make growing up easier. We’re the creators of the perfect leak-proof period underwear and comfy training bras.

  • Our undies look and feel just like normal underwear, but they are absorbent, sweat-wicking, odor-crushing and seamless. They hold 2-3 teaspoons of blood, stopping period leaks from ruining your day. Basically, they’re magic for your period ✨

  • It totally depends on your flow! We suggest wearing period underwear as your period backup protection, with a pad or tampon. If your period is lighter, period panties can be worn on their own as full period protection.

  • Our bikini or boyshort period underwear eliminate period stress for teens and tweens. Growing up is hard enough, why worry about your period ruining your pants? Plus, it’s good for the environment and your wallet!