Teen Super Leakproof® No-Show Boyshort
Bundle & Save: 3 for $75
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.
With the ability to hold about 3 super tampons’ or 1.5 regular pads' worth of blood, this super-absorbent boyshort underwear works just as hard as you do—no backup needed. With our patented leakproof technology and quick-drying fabric, they’re a game-changer for training and recharging with protection against sweat, discharge, and blood, on heavy days or nights.
Key Features:
- Quick-Drying
- Moisture and Sweat Wicking
- Absorbs the same as about 3 super tampons or 1.5 regular pads
- Super soft & stretchy
- Invisible under leggings or shorts (aka no visible seam lines)
- Patented leakproof technology
🇨🇦 Free standard shipping over $100.
(after discounts, before shipping + taxes) All items ship from within Canada.
Within 30 days of delivery, you may exchange for another size, style or store credit. We’re unable to provide refunds on underwear.
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.
- Patricia K.Verified BuyerUsual Pant Size - Knixteen Kids 12-14Size Purchased - Knixteen Underwear S3 minutes agoUsual Pant Size - Knixteen Kids 12-14Size Purchased - Knixteen Underwear SRated 5 out of 5 starsGreat Fit
My grand daughters said they like the fit of these underwear items and feel comfortable while wearing them.
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? - Jenise L.Verified BuyerHeight 5’6 – 5’8”Usual Pant Size - Knixteen Womens 4-8Size Purchased - Knixteen Underwear M2 days agoHeight 5’6 – 5’8”Usual Pant Size - Knixteen Womens 4-8Size Purchased - Knixteen Underwear MRated 5 out of 5 starsWorked great
My teen loves these. Works well for her. No issues at all.
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? - Jennifer A.Verified BuyerHeight <5’5”Usual Pant Size - Knixteen Kids 12-14Size Purchased - Knixteen Underwear XS2 days agoHeight <5’5”Usual Pant Size - Knixteen Kids 12-14Size Purchased - Knixteen Underwear XSRated 5 out of 5 starsGreat!
My kids like them, are comfortable.
ComfortRated 5.0 on a scale of 1 to 5Poor ExcellentFitRated -2.0 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 4.0 on a scale of 1 to 5Poor ExcellentWas this helpful?
