Teen Leakproof Cotton Bikini
Mix & Match: Buy 4+ Save 15%, 7+ Save 25%
Teen Leakproof Cotton Bikini
Mix & Match: Buy 4+ Save 15%, 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.
The comfiness of cotton, with the confidence of leakproof. Our newest floating liner tech sits comfortably on top of your undies to give extra protection from leaks, and is bonded at all the edges to trap in liquid absorbing the same as about 3 super tampons. You won’t notice the difference—other than the fact that your leak worries seem to float away.
Key Features:
- Cotton spandex blend for ultimate comfort
- Raised liner away from the body
- Bonded all around to help keep liquid in to prevent leaks
- Absorbs about the equivalent of 3 super tampons worth of period blood
- Certified according to OEKO-TEX® STANDARD 100, Product Class I : HK020 246396 TESTEX
🇨🇦 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.
- Frances B.Verified Buyer8 minutes agoRated 5 out of 5 starsAmazing!
Love your inconsistence/period undies. Wear them every day. High quality.
Was this helpful? - Amber L.Verified BuyerPant Size Teen 4-10Size Purchased MUsage Primary Protection, Period, Back-up Protection1 week agoPant Size Teen 4-10Size Purchased MUsage Primary Protection, Period, Back-up ProtectionRated 5 out of 5 starsVery comfortable
These are so comfortable and work great. They are a much better style than others that I’ve tried.
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 5.0 on a scale of 1 to 5Poor ExcellentWas this helpful? - Ellie T.Verified Buyer1 month agoRated 5 out of 5 starsPerfect period underwear
Fit perfect, true to size, love them!
EffectivenessRated 5.0 on a scale of 1 to 5Poor ExcellentComfortRated 4.0 on a scale of 1 to 5Poor ExcellentFitRated 0.0 on a scale of minus 2 to 2Runs Small True to Size Runs LargeEase of Use Rated 5.0 on a scale of 1 to 5Poor ExcellentEase of UseRated 5.0 on a scale of 1 to 5Poor ExcellentWas this helpful?