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Color:

Color: Cheetah Print Limited Edition

Size:

Size:

Size and Fit Guide

Spend $200+, get extra 10% OFF
Rewards Members Earn 0 Points

Teen Leakproof UltraThin No-Show Bikini

$25.00 CAD

Spend $200+, get extra 10% OFF
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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

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

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
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| 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.

4.5
Rated 4.5 out of 5 stars
Based on 529 reviews
Total 5 star reviews: 396 Total 4 star reviews: 59 Total 3 star reviews: 30 Total 2 star reviews: 20 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
529 reviews
  • Rated 5 out of 5 stars
    Yesterday
    Great fit

    Absolutely love this style. Great product.

    Jacqueline L.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 weeks ago
    Super comfy! Very helpful

    Never have owned a pair, these were surprisingly comfortable and effective. Like how easy they are to clean. Overall great purchase and very happy!

    Elizabeth T.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Comfortable

    Good protection and more comfortable than wearing a pad

    Sim K.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    The best underwear!

    I have been wearing Knix underwear for the last few months and I love them!

    Cindy A.
    Verified Buyer
  • Rated 4 out of 5 stars
    3 weeks ago
    Nice birthday freebie

    Comfy, tho I’m of an age I don’t really need any sort of absorbency. Still appreciate it!

    Jeannie F.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Best underwear

    Best leakproof underwear!!!

    Lydia F.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Perfect Invisible Bikini

    As always; my favourite fit.

    Jayne B.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    5 Stars

    I love these underwear. This my second time ordering! They are so comfortable and definitely leak proof. I would recommend them to anyone looking for comfort and protection.

    Denise
    Verified Buyer
  • Rated 1 out of 5 stars
    3 weeks ago
    Bled through

    Wore them for 3 hours on a moderate flow day and bled through them. Was surprised but glad I had black pants on!

    Meghan
    Verified Buyer
  • Rated 4 out of 5 stars
    3 weeks ago
    Underwear is amazing

    Will buy more pairs but they are kinda pricey

    Linda P.
    Verified Buyer
  • Rated 5 out of 5 stars
    4 weeks 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
  • Rated 5 out of 5 stars
    1 month ago
    Je les adore!

    Je n’ai pas des règles très abondantes alors c’est parfait!!!

    Christine C.
    Verified Buyer