Teen Leakproof UltraThin No-Show Bikini
Up to 50% off Select Colors
Knix period underwear and pads are now sales tax-free in Canada.* We celebrate improvements to the accessibility and affordability of essential period care products.
Hanging out or running to your next class? These period undies provide the ultimate comfort you want, plus ultra-thin protection you need from sweat, discharge and leaks. It’s a classic silhouette made with a super soft-and-stretchy, quick-drying material. It absorbs about the equivalent of 2.5 super tampons for an extra dose of confidence on those medium-flow days.
Key Features:
- 360LeakSeal™ patented technology designed to seal in leaks from every angle
- Soft and stretchy for comfort throughout the day
- Seamless look for any OOTD
- Quick dry for that fresh feel
🇨🇦 Free standard shipping over $100.
(after discounts, before shipping + taxes) All items ship from within Canada.
Warehouse Sale Policy:
Sale items with a less than 30% discount are exchange or store credit only. Sale items with a discount of 30% or more are final sale. For non-sale items, our standard return policy applies. Offer excludes bundles, sets, kits and gift cards.
Standard Underwear Policy:
Eligible for return or exchange within 30 days of delivery. Packaging may be removed to wash and wear, ensuring a proper fit.
Kt by Knix for Teens Underwear FAQs
Kt by Knix is designed for smaller and growing bodies to fit teens. Kt Period Underwear are available in teen sizes with smaller leg openings.
Super Absorbency
Absorbs 9–12 tsp (45–60 ml) of blood—that’s about 9–12 regular tampons or pads! Perfect for overnight protection or your teens heaviest days when changing into a fresh pair might not be convenient.
High Absorbency
Absorbs 4–8 tsp (20–40 ml) of blood, or the equivalent of 4–8 tampons or pads. These are perfect for heavy flow days.
Medium Absorbency
Absorbs up to 3 tsp (15 ml), or about 3 tampons or pads worth of blood. Ideal for light to medium flow days or as backup to tampons or period cups.
All of our period underwear, swimwear, reusable pads, and activewear have our patented leakproof technology built right in.
First Layer: Wicks away sweat and moisture while neutralizing odors to keep your teen fresh all day long.
Second Layer: A super thin, highly absorbent liner that holds the power of 3–20 tampons or pads.
Third Layer: A secure, liquid-resistant outer layer keeps leaks from happening.
The short answer: nope! Depending on the absorbency level of the period underwear and the heaviness of your teens flow, your teen can wear our period undies on their own or as a backup to tampons or menstrual cups. They can wear our High and Super absorbency underwear alone and be totally protected, while our Medium absorbency underwear can be worn alone on lighter days or as backup on heavier days.
- Larissa B.Verified BuyerHeight 5’6 – 5’8”Usual Pant Size - Knixteen Womens 10-14Size Purchased - Knixteen Underwear L9 hours agoHeight 5’6 – 5’8”Usual Pant Size - Knixteen Womens 10-14Size Purchased - Knixteen Underwear LRated 5 out of 5 starsVERY Absorbent
I have heavy periods and wish these came out when I was a teen. I love the protection they've offered me and the freedom of not having to constantly use pads.
ComfortRated 5.0 on a scale of 1 to 5Poor ExcellentFitRated 0.0 on a scale of minus 2 to 2Runs Small True to Size Runs LargeEffectivenessRated 5.0 on a scale of 1 to 5Poor ExcellentEase of UseRated 5.0 on a scale of 1 to 5Poor ExcellentWas this helpful? - Dollface4681 S.Verified BuyerHeight <5’5”Usual Pant Size - Knixteen Womens 4-8Size Purchased - Knixteen Underwear M3 weeks agoHeight <5’5”Usual Pant Size - Knixteen Womens 4-8Size Purchased - Knixteen Underwear MRated 5 out of 5 starsPeace of mind
My daughter has been exclusively wearing Knix Teen underwear for over a year now and she refuses to wear anything else. Comfortable and give her (and I) peace of mind.
ComfortRated 5.0 on a scale of 1 to 5Poor ExcellentFitRated 0.0 on a scale of minus 2 to 2Runs Small True to Size Runs LargeEffectivenessRated 4.0 on a scale of 1 to 5Poor ExcellentEase of UseRated 5.0 on a scale of 1 to 5Poor ExcellentWas this helpful? - Petya S.Verified Buyer1 month agoRated 5 out of 5 starsGood to go
I’ve been using Good to go bras for a few years now. I find them comfortable but they stretch out quickly.
I had a great experience at the store the consultant was very helpful.
ComfortRated 3.0 on a scale of 1 to 5Poor ExcellentFitRated 0.0 on a scale of minus 2 to 2Runs Small True to Size Runs LargeEffectivenessRated 3.0 on a scale of 1 to 5Poor ExcellentEase of UseRated 3.0 on a scale of 1 to 5Poor ExcellentWas this helpful?
