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Home / Shop All Teen / Teen Leakproof UltraThin No-Show Bikini 3-Pack
KnixTeen

Teen Leakproof UltraThin No-Show Bikini 3-Pack

$65.00 CAD

$75.00

Save $10
Checkmark

Absorbs about 2.5 super tampons

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Invisible under clothes

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Superior protection without the bulk

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Machine washable

| Black
| Black

Absorbency: Moderate

Moderate
Drop
Drop
Drop
Drop
Drop
about 2-4 super tampons
Light
Drop
Drop
Drop
Drop
Drop
about 1-3 regular tampons
Heavy
Drop
Drop
Drop
Drop
Drop
about 4-7 super tampons

Color: Black

Size:

True to Size

•

Size:

Size and Fit Guide

Leakproof Underwear is Sales Tax Free in Canada*
Free Shipping on orders $100+

Shipping

Shipping
Processing Timelines

Please allow 1-2 business days for our warehouse team to pack and ship your order. During peak periods such as sales, holidays and product launches, please allow up to 4 business days for us to process your order.

Delivery Time

For the most up-to-date delivery time estimates, please refer to the shipping timeline at checkout. Delivery timelines vary depending on location and do not include processing times.

Shipping Charges

Orders over $100* CAD = Free Shipping (2-6 business days)
Orders under $100* CAD = $12 CAD Shipping (1-3 business days)
Orders delivering to NWT, Nunavut and Yukon are subject to $20 delivery fee.
*After discounts, before shipping and taxes.
Easy Exchanges within 30 Days

Returns

Returns
Free Returns

Knix covers the return shipping fees for exchanges and refunds initiated through our Return & Exchange Portal. Exchange orders initiated through our Return & Exchange portal are also eligible for free shipping within the USA and Canada. Please note, the shipping fees on your original order are non-refundable.

Return Policy

Return policy varies by product, please check if your item is refund or exchange eligible by viewing our full policy here.

Sale & Last Call

Items discounted below 30% are eligible for size exchange or store credit. Items discounted 30% and above are final sale – no refunds, store credits, or exchanges can be accommodated.
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Comfort-First Fit

Bikini silhouette with a classic mid-rise fit, medium hip and bum coverage.

Worry-Free Protection

Our newest leakproof innovation provides more absorbency without the bulk. Patented 360 LeakSeal™ technology locks in leaks at every edge.

Moderate Absorbency

Absorbs 2.5 super tampons worth of liquid—perfect for moderate flow days, light bladder leaks, and sweat. The carbon cotton gusset top layer keeps you dry.

No-Show Style

Buttery-soft and smooth fabric gives a seamless look and feel. Disappears under clothes, even leggings.

Easy to Wash

Machine washable just like regular underwear.

Zoom

| Black
| Black

How to Choose?

Essential

Drop
Drop
Drop
Drop
Drop
  • • Everyday Wear
  • • No leakproof protection
  • tsp
    0 tsp

Heavy

Drop
Drop
Drop
Drop
Drop
  • • heavy period days
  • • overnight protection
  • • light bladder leaks
  • tsp
    about 8-14 tsp
  • pad
    about 1.5-3 regular pads
  • tampon
    about 4-7 super tampons
  • cup
    about 1.5-3 menstrual cups

Light

Drop
Drop
Drop
Drop
Drop
  • • light period days
  • • sweat
  • • discharge
  • tsp
    about 1-3 tsp
  • pad
    about 1-3 pantyliners
  • tampon
    about 1-3 regular tampons
  • cup
    about 0.5 menstrual cups

Moderate

Drop
Drop
Drop
Drop
Drop
  • • moderate period days
  • • light bladder leaks
  • • sweat
  • tsp
    about 4-8 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-4 super tampons
  • cup
    about 0.5-3 menstrual cups

Ultra

Drop
Drop
Drop
Drop
Drop
  • • extra heavy period days
  • • overnight protection
  • • light bladder leaks
  • tsp
    about 15-20 tsp
  • pad
    about 1.5-2.5 super pads
  • tampon
    about 7-11 super tampons
  • cup
    about 2-3 menstrual cups
FRESH FIX TECHNOLOGY®

Built-in protection that feels like nothing at all.

Our patented 360 LeakSeal™ technology locks in leaks at every edge. The ultra-thin liner absorbs about 2.5 super tampons worth of liquid.

Soft Top Layer

Soft Top Layer

Gently wicks away moisture while keeping you feeling fresh and odor-free.

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4.5
Rated 4.5 out of 5 stars
Based on 546 reviews
Total 5 star reviews: 411 Total 4 star reviews: 59 Total 3 star reviews: 31 Total 2 star reviews: 21 Total 1 star reviews: 24
89%would recommend these products
ComfortRated 4.5 on a scale of 1 to 5
FitRated -0.2 on a scale of minus 2 to 2
EffectivenessRated 4.5 on a scale of 1 to 5
Ease of UseRated 4.6 on a scale of 1 to 5
Write a Review (Opens in a new window)
546 reviews
  • Rated 5 out of 5 stars
    3 minutes ago
    Eat reduce ever

    I wear these for light days and also for daily wear because once a woman gets to a certain age you could sneeze cough or laugh too hard and if you have a job like I do sometimes you have to hold it until everyone is served so these do the job and I wear skin tight pants over them and you Andy tell anything is there these are great for everyday wear

    Wendi A.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 hours ago
    Great fit

    Great fit, work great to

    Rachel B.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    Yesterday
    5 Stars

    Super confortable, tout de même discrete, elles sont parfaites

    Eve
    Was this helpful?
  • Rated 5 out of 5 stars
    Yesterday
    5 Stars

    Jadore tout simplement.

    Eve
    Was this helpful?
  • Rated 5 out of 5 stars
    Yesterday
    5 Stars

    Jadore!

    Confortable, discret, parfait

    Eve
    Was this helpful?
  • Rated 5 out of 5 stars
    Yesterday
    5 Stars

    Jadore!

    Confortable, discret, parfait

    Eve
    Was this helpful?
  • Rated 5 out of 5 stars
    Yesterday
    Seamless !!

    I absolutely love these ultra-thin bikini’s !! They are beyond comfortable and leakproof is brilliant!

    I wished I’d purchased years ago.

    These are a must have !!

    Jennifer J.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 days ago
    Leakproof panties

    Bought these for my teen granddaughter and she loves them.

    Marlane J. B.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 days ago
    Love bikini 2.0!!!

    I was leery at first about my purchase of the new leakproof bikini's. I really loved the Cheeky cut but I found that it was discontinued. The bikinis I bought previously ran higher in the waist than I prefer. I just tried on my new order of leakproof bikini's and am very pleased with the comfort and cut! Its low cut on the waist, which i love, and a bit fuller coverage in the back compared to the cheeky's, but extremely comfortable. I love the new pattern prints too! Great job on the redesign, Knix!

    Natasha D.
    Verified Buyer
    Was this helpful?
  • Rated 2 out of 5 stars
    5 days ago
    Poor quality

    I bought a couple of pairs December of 2024. It's been less than a year and the seams have already come undone, exposing the material inside. Unfortunately, this happened to each pair that I bought from Knix, so I will not be purchasing again. I washed gently in cool water as recommended (no hot water), however the seams still opened up which resulted in leakage. I had high hopes but was disappointed by the quality.

    Nyasha
    Verified Reviewer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Culotte

    Comme d’habitude trop confo

    Rioux P.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Best Undies Ever!!

    I wish I could only wear Knix undies for the rest of my life!! They are so comfy and absolutely perfect for that time of the month. Especially as a perimenopausal woman, when you just have no clue what your cycle is doing!

    Paula M.
    Verified Buyer
    Was this helpful?