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| Black
Light Leakproof No-Show Bikini
$25.00 CAD

Color: Black
Best Seller

Color: Black

Size:

Size:

Size and Fit Guide

Mix & Match: 3+ for $20 each
Rewards Members Earn 0 Points

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Home / Shop All Teen / Teen Leakproof UltraThin No-Show Bikini
Best Seller

Teen Leakproof UltraThin No-Show Bikini

$25.00 CAD

Bundle & Save: 3 for $65
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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
| Black
| Black
| General
| General
| General
| General
| General

Absorbency: Moderate
Drop
Drop
Drop
Drop
Drop

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.
Rewards Members Earn 25 Points

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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 More Panty Lines

Made from our signature buttery-soft fabric and designed to be invisible under clothes, including leggings.

Easy to Wash

Machine washable just like regular underwear.

Zoom

| Black
| Black
| Black
| Black
| General
| General
| General
| General
| General

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
    6-11 tsp
  • pad
    about 1.5-3 regular pads
  • tampon
    about 3-6 super tampons
  • cup
    about 1-2 menstrual cups

Light

Drop
Drop
Drop
Drop
Drop
  • • light period days
  • • sweat
  • • sweat and 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 3-6 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-3 super tampons
  • cup
    about 0.5-1 menstrual cups

Ultra

Drop
Drop
Drop
Drop
Drop
  • • extra heavy period days
  • • overnight protection
  • • light bladder leaks
  • tsp
    13-17 tsp
  • pad
    3.5-4.5 regular pads
  • tampon
    7-9 super tampons
  • cup
    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 499 reviews
Total 5 star reviews: 373 Total 4 star reviews: 55 Total 3 star reviews: 28 Total 2 star reviews: 20 Total 1 star reviews: 23
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)
499 reviews
  • Rated 5 out of 5 stars
    4 days ago
    Great!

    These are great for my teen who is a dancer. She loves them under her bodysuit and they are actually no-show which is amazing!

    Megan B.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    Just perfect !

    Love the fit and comfort!

    Jessica B.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    3 weeks ago
    Def not leakproof

    Leaked out the sides, although not that much transferred to my pants. The underwear material caught most of it. Still dry at top and bottom so not a case of too much flow for the underwear.

    Cheryl M.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    My daughter loves them!

    My daughter loves them and wears them all the time, period or not. She wears the beige for all dance competitions and it always gives her a peace of mind.

    Katy
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 weeks ago
    Teen Bikini

    Very comfortable.

    Julie L.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 weeks ago
    Very Happy W/ Purchase

    These panties are very comfortable and perfect for work during those long hot nasty days where u want some freshness and they put ur mind at ease.

    Lauran L.
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    4 weeks ago
    LOVE

    a game changer

    Cassidy G.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 weeks ago
    5 Stars

    Nice fabric and very comfortable.

    Rosa
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 weeks ago
    I love this underwear

    The leak proof is also amazing for sweating. I wear nothing else now. And only Knix brand. They work the best. They have helped me reduce the number of UTI’s I can ride my bike again, and garden with out having to go dry off and change all the time.

    Jo-Anne G.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    4 weeks ago
    Excellent for dance!

    Purchased these underwear for my daughter who is competitive dance. They are the perfect solution to allow her to feel confident dancing without the worry. Highly recommend and will continue to purchase more. Can’t wait for her to try out their swimwear.

    Lisa C.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    1 month ago
    Sizing is off

    I’ve purchased the ultra thin underwear and never had any issues. However it seems the sizing of this pair is off. The large on these ones is smaller compared to my other pairs.

    Krystle S.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 month ago
    Such a pretty colour and so effective

    These are great for a lighter period day, and the colour is gorgeous.

    Alka B.
    Verified Buyer
    Was this helpful?