Teen Super Leakproof® No-Show Bikini
Mix & Match: Buy 4+ Save 15%, Buy 7+ Save 25%
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 bikini 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.
Free expedited shipping over $150.
(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.
- Lorraine W.Verified Buyer2 days agoRated 5 out of 5 starsBought for granddaughter
My granddaughter said she loves them and loved their quality.
Was this helpful? - Julie R.Verified Buyer1 week agoRated 5 out of 5 starsPerfect for tween daughter
Sizing is true and my daughter is having an easier time with her period. They are easy to wash as well. Very good product and true to sizing.
Was this helpful? - Kyra D.Verified BuyerPant Size Teen 12-16Size Purchased MUsage Period2 weeks agoPant Size Teen 12-16Size Purchased MUsage PeriodRated 5 out of 5 starsLove the material
Material is comfy
QualityRated 5.0 on a scale of 1 to 5Poor ExcellentComfortRated 5.0 on a scale of 1 to 5Poor ExcellentSizingRated 0.0 on a scale of minus 2 to 2Fits Small True to Size Fits LargeEffectivenessRated 4.0 on a scale of 1 to 5Poor ExcellentWas this helpful?