No more worrying about leaks. Period protection designed just for teens.
Periods shouldn’t come with this much stress
Periods are a top 5 anxiety-driver for teens. From school to overnight to just getting through the day, they worry about leaks a lot.
Kt period solutions can help them stop:
• Leaking overnight
• Leaking through clothes and sheets
• Constantly checking “just in case”
• Wearing backups
• Suffering through bulky pads and painful tampons
Period underwear, swim, and active look just like regular clothing, but they absorb leaks, protect against accidents, and help teens move through their day with confidence. So your teen can focus on being a teen.
Why leakproof?
Built-in protection that helps teens feel secure on their period. The science behind the #1 Leakproof Brand in North America.
Soft top layer
Comfy, super smooth moisture-wicking liner keeps you feeling fresh and dry.
Middle absorbent layer
An absorbent layer holds up to 9 super tampons worth of blood.
Bottom leakblocker layer
Outer layer acts as a barrier to stop any leaks from getting through.
How to wash
Kt period undies are 100% reusable and machine washable. Throw them in the wash just like regular undies.
Leakproof Absorbency Guide
Good for
Perfect for overnight protection or your teens heaviest days when changing into a fresh pair might not be convenient.Absorbs
About 4-7 super tampons or 1.5-3 regular padsGood for
Ideal for medium period days, discharge and sweat.Absorbs
About 2-4 super tampons or 1-1.5 regular pads
First Pair Risk-Free Policy
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 a standard refund* (excluding original shipping fees).
All unopened packages will be donated to local organizations to support people in need.
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Shop All SwimThe questions you are thinking, answered.
No. It looks and feels like underwear — not a diaper, not a pad.
Not at all. No special care needed.
- Wear
- Throw in the wash with your regular laundry.
- Repeat
Yes. Fewer changes, no supplies to carry and no emergencies.
They can be worn on their own or paired with other products like pads, tampons, or cups, depending on what feels best.
The key is finding the absorbency level that matches your needs.
Since no two periods look the same, and flows can change from day to day, having a few absorbency options on hand helps create a routine that works throughout the whole cycle.
First Pair Risk-Free Policy:
Because they’re, well, underwear, we can’t accept exchanges or returns on used items. BUT you can try one pair from 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, we ask that you only open, wash, and wear one pair of underwear. That way if you don’t love them, any unopened packages from the same purchase will be eligible for an exchange or a standard refund (excluding original shipping fees).
All unopened packages will be donated to local organizations to support people in need.
That’s totally okay! If you’re feeling stressed, you can try our Light Leakproof underwear — it’s ultra-thin, feels just like regular underwear, and helps you feel prepared without any bulk.
Basically, your everyday underwear… just better.
Save 15% on the Period Emergency Kit
School is stressful enough without leaks! Make sure teens are prepared for periods with the Period Emergency Kit. Underwear absorb up to 2.5 tampons worth of blood and fit discreetly in any backpack so they can change quickly and avoid any embarrassing leaks. Perfect for teens and tweens starting their first period or managing unpredictable cycles. Comfortable, washable, and parent approved for stress free school days.
A note from our Founder
I started KT because I believe teens deserve period products made just for them. Ones that feel comfortable, supportive and confident boosting.
Periods are a normal part of life, but for many teens they still come with stress, uncertainty or stigma. KT exists to change that.
Every purchase helps us build better products and a better period experience for the next generation.
Thank you for joining that journey.
Joanna Griffiths — President and Founder, Knix and KT by Knix