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| Warm Sand
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Color: Warm Sand

Size:

Size:

Mix & Match: 3+ for $25 each
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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

| Electric Orchid
| Electric Orchid
| Electric Orchid
| General
| General
| General
| General
| General

Absorbency: Moderate
Drop
Drop
Drop
Drop
Drop

Color: Electric Orchid Limited Edition

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

| Electric Orchid
| Electric Orchid
| Electric Orchid
| 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
    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 550 reviews
Total 5 star reviews: 415 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 4.7 on a scale of 1 to 5
Write a Review (Opens in a new window)
550 reviews
  • Rated 5 out of 5 stars
    3 minutes ago
    Leakproof ultra thin no show

    Great product makes me feel safe to go places and not have leakage if I sneeze or cough. Well always reorder.

    Shannon T.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 hour ago
    No show bikini

    Great

    Elizabeth L.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 hours ago
    Excellent!

    They are great! They have given my life back. Panty liners irritate my sensitive skin. Knix fit perfectly, are comfortable, and keep me dry. I'm so glad I made the purchase.

    Angela D.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    2 days ago
    comfortable

    Love the no-show thin and protective

    Christine G.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 days 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
    3 days ago
    Great fit

    Great fit, work great to

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

    Super confortable, tout de même discrete, elles sont parfaites

    Eve
    Was this helpful?
  • Rated 5 out of 5 stars
    4 days ago
    5 Stars

    Jadore tout simplement.

    Eve
    Was this helpful?
  • Rated 5 out of 5 stars
    4 days ago
    5 Stars

    Jadore!

    Confortable, discret, parfait

    Eve
    Was this helpful?
  • Rated 5 out of 5 stars
    4 days ago
    5 Stars

    Jadore!

    Confortable, discret, parfait

    Eve
    Was this helpful?
  • Rated 5 out of 5 stars
    4 days ago
    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
    1 week ago
    Leakproof panties

    Bought these for my teen granddaughter and she loves them.

    Marlane J. B.
    Verified Buyer
    Was this helpful?