Bundle & Save

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Buy 4+ Save 15%, Buy 7+ Save 25% when you bundle any eligible Leakproof Underwear or Thigh Savers.

  • Black
Leakproof UltraThin No-Show Underwear Bikini
Medium Absorbency
$22 USD Buy 4+ Save 15%, Buy 7+ Save 25%
  • Petal Party
Leakproof Thigh Saver®
Light Absorbency
$38 USD Buy 4+ Save 15%, Buy 7+ Save 25%
  • Shady Blue
Light Leakproof No-Show Underwear Boyshort
Light Absorbency
$19 USD Buy 4+ Save 15%, Buy 7+ Save 25%
  • Black
Light Leakproof No-Show Underwear Bikini
Lightest Absorbency
$19 USD Buy 4+ Save 15%, Buy 7+ Save 25%
  • Black
Leakproof UltraThin No-Show Underwear Boyshort
Medium Absorbency
$22 USD Buy 4+ Save 15%, Buy 7+ Save 25%
  • Black
Super Leakproof® No-Show Underwear Bikini
Heavy Absorbency
$25 USD Buy 4+ Save 15%, Buy 7+ Save 25%
  • Black
Super Leakproof® No-Show Underwear Boyshort
Heavy Absorbency
$25 USD Buy 4+ Save 15%, Buy 7+ Save 25%
  • Black
Super Leakproof® Sleepover Short
Heavy Absorbency
$39 USD Buy 4+ Save 15%, Buy 7+ Save 25%
  • Black
Leakproof Luxe Modal Sleep Boxer
Medium Absorbency
$29 USD Buy 4+ Save 15%, Buy 7+ Save 25%
  • Black
Leakproof Front-to-Back Liner Underwear Bikini
Medium Absorbency
$29 USD Buy 4+ Save 15%, Buy 7+ Save 25%
  • Black
Light Leakproof No-Show Underwear High Rise
Lightest Absorbency
$22 USD Buy 4+ Save 15%, Buy 7+ Save 25%
nothing is tmi here—we promise.
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Mix & Match any Teen Period Underwear & Teen Leakproof Thigh Savers and Save up to 25%. 

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

*Discount is automatically applied to cart. Discount does not apply to sale items or kits. 

Each pair has a built-in liner that absorbs period blood. Kt Period Underwear is categorized by lightest, medium and heavy flows so you can find the right pair for your teen’s needs.

All of our period underwear, swimwear, reusable pads, and activewear have our patented leakproof technology built right in. Liner’s are discreet and comfortable, and fit for your teen’s unique flow. 

That’s up to your teen or tween! Every flow and comfort level is different.

Depending on the absorbency level of the period underwear and the heaviness of your teen’s flow, they can wear our period undies on their own or as a backup to tampons or menstrual cups. 

We always recommend they choose an option that makes them feel most confident!

Step 1: Give your teens underwear a quick rinse under cold water.
Step 2: Throw it in the washing machine with your regular clothes. Wash on cold with mild detergent (no softener or bleach).
Step 3: There are two ways to dry them depending on the undies you have: lay flat to dry for medium absorbency products, or tumble dry on low for high to super absorbency products.
Step 4: That’s it! No ironing needed.

Check out our size chart here. If you want some help, we have virtual fitters ready on deck to help you find your perfect fit. Book a video call with them today.

Because they’re, well, underwear, we can’t accept exchanges or returns on used items. BUT you can try your first pair on your first order risk-free for 30 days!


If you ordered the wrong size of period underwear, we’ll send you a different pair at no cost or offer you a standard refund within 30 days of delivery (excluding original shipping fees).


If your order included multiple period underwear, open, wash, and wear one pair only. That way if you don’t love them, any unopened packages from the same purchase will be eligible for an exchange or standard refund (excluding original shipping fees).


All unopened packages will be donated to local organizations to support people in need.