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Revolution V-Neck Bra

$68.00 CAD
Buy a Bra, Get Free Ultrathin Undies | Code: FREELEAKPROOF

Color: White with Black Polka Dot Limited Edition

Super Leakproof® Dream Boxer

$48.00 CAD

Color: Plaid Limited Edition

The Quintessential Sleep Set

$150.00 CAD

Color: Ivory Limited Edition

Leakproof UltraThin No-Show High Rise

$32.00 CAD
Mix, Match & Save: 3+ for $25 each

Color: Black with White Polka Dot Limited Edition

Home / Bikini Underwear / Light Leakproof No-Show Bikini 3-Pack
Bundle Deal

Light Leakproof No-Show Bikini 3-Pack

$60.00 CAD

$75.00

Save $15
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3-pack underwear

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Absorbs about 1 regular tampon

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Invisible under clothes

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Perfect for daily wear

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Machine washable

| Twilight Navy/Blue Light/White
| Twilight Navy/Blue Light/White
| Twilight Navy/Blue Light/White
| Twilight Navy/Blue Light/White
| Twilight Navy/Blue Light/White
| Twilight Navy/Blue Light/White

Absorbency: Light
Drop
Drop
Drop
Drop
Drop

Color: Twilight Navy/Blue Light/White Limited Edition

Size:

True to Size

•

Size:

Size and Fit Guide

Leakproof Underwear is Sales Tax Free in Canada*
Free Express Shipping on orders $125+

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

Sale & Last Call

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

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.
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Comfort-First Fit

Boyshort silhouette with a mid-rise fit and extra hip and bum coverage.

Worry-Free Protection

Our original leakproof technology provides a barely noticeable feel. Patented bonded edges help prevent side leaks.

Light Absorbency

Absorbs 1 regular tampon worth of liquid—perfect for light flow days, sweat and discharge, and backup protection for heavy flow days.

No-Show Style

Made from our signature buttery soft fabric with a wide, comfortable waistband. Wear it on its own or under your favorite pajamas.

Easy to Wash

Machine washable just like regular underwear.

Zoom

| Twilight Navy/Blue Light/White
| Twilight Navy/Blue Light/White
| Twilight Navy/Blue Light/White
| Twilight Navy/Blue Light/White
| Twilight Navy/Blue Light/White
| Twilight Navy/Blue Light/White

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
PATENTED LEAKPROOF TECHNOLOGY

Built-in protection that feels like nothing at all

Our original Fresh Fix Technology® features a built-in absorbent liner absorbing about 1 regular tampon worth of liquid so you feel fresh and in-control.

Soft Top Layer

Soft Top Layer

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

Our Best-Selling Underwear

Shop All Arrow Right

Super Leakproof® Dream Boxer

$48.00 CAD

Color: Plaid Limited Edition

Leakproof UltraThin No-Show High Rise

$32.00 CAD
Mix, Match & Save: 3+ for $25 each

Color: Black with White Polka Dot Limited Edition

Super Leakproof® Dream Short

$48.00 CAD

Color: Black with White Polka Dot Limited Edition

Leakproof UltraThin No-Show Bikini

$27.00 CAD
Buy a Bra, Get Free Ultrathin Undies | Code: FREELEAKPROOF

Color: Black with White Polka Dot Limited Edition

Leakproof UltraThin No-Show French Cut

$27.00 CAD
Buy a Bra, Get Free Ultrathin Undies | Code: FREELEAKPROOF

Color: Black with White Polka Dot Limited Edition

Light Leakproof No-Show Bikini

$25.00 CAD
Mix, Match & Save: 3+ for $20 each

Color: Warm Sand

Leakproof UltraThin No-Show High Rise Shimmer 3-Pack

$75.00 CAD
$96.00
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Color: Tapestry/Burnished Gold/Dark Cherry Limited Edition

Leakproof Cotton High Rise

$29.00 CAD
Mix, Match & Save: 3+ for $25 each

Color: Black

4.5
Rated 4.5 out of 5 stars
Based on 7,021 reviews
Total 5 star reviews: 5.3k Total 4 star reviews: 956 Total 3 star reviews: 392 Total 2 star reviews: 199 Total 1 star reviews: 222
91%would recommend these products
ComfortRated 4.7 on a scale of 1 to 5
EffectivenessRated 4.6 on a scale of 1 to 5
FitRated -0.0 on a scale of minus 2 to 2
Ease of UseRated 4.6 on a scale of 1 to 5
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7,021 reviews
  • Rated 5 out of 5 stars
    5 minutes ago
    Magic!

    I don't know how they work, but love these undies! They are 100% leak proof!! I bought the medium and may size up next time as I feel they're a bit tight around the tops of my thighs - but not uncomfortable! I will definitely purchase more pairs!

    Danielle G.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    3 days ago
    Love them!

    I absolutely love everything about them ! They feel like your wearing nothing, so comfortable yet effective

    Cora Y.
    Verified Buyer
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  • Rated 5 out of 5 stars
    4 days ago
    Teen Light Leakproof

    I bought a three pack as it was a great sale deal! I am 65+ years old, normally wear a size 2 pant and weigh slightly under 100 #.

    By using the size and fit guide chart for adult pant size, I bumped up a size and chose the M size. They fit me perfect and are very comfortable.

    I have very minimal bladder leak, so can't necessarily judge their leakproof performance.

    Isabel N.
    Verified Buyer
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  • Rated 4 out of 5 stars
    5 days ago
    I like them

    They are very comfortable and well made

    Phil D.
    Verified Buyer
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  • Rated 1 out of 5 stars
    5 days ago
    I wish I could give it more stars

    unfortunately, knix has changed over the years and these underwear are no longer comfortable. I LOVED their original version and as their formula changes and the way they design underwear, it has become more uncomfortable to wear

    Jasmin
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    6 days ago
    Absolutely love them!

    Amazing fit and comfort! Loove the feel and so comfy!

    Chelsey S.
    Verified Buyer
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  • Rated 5 out of 5 stars
    6 days ago
    Fit well

    I like the fit of these and the light leak proof is perfect for my needs.

    Marie A.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Cute and comfy

    These are perfection.

    Lindsay S.
    Verified Buyer
    Was this helpful?
  • Rated 5 out of 5 stars
    1 week ago
    Great

    These are so comfy

    Lindsay S.
    Verified Buyer
    Was this helpful?
  • Rated 3 out of 5 stars
    1 week ago
    Light Leakproof No-Show Bikini

    I like the light leakproof underwear but the leakproof fabric doesn’t rise high enough in the front. An extra inch would be perfect!

    Catherine
    Verified Buyer
    Was this helpful?
  • Rated 1 out of 5 stars
    1 week ago
    Perfect for those light days

    Very comfortable, size fit well. The first wash got rid of the chemically smell.

    Sally C.
    Verified Buyer
    Was this helpful?
  • Rated 4 out of 5 stars
    2 weeks ago
    Good bikini, for the right body

    I am 5'3" and 150 lbs, normally a pant size 6-8, with a pear-shaped body. I ordered a medium. At first, it's a little snug, but as it stretched (as expected), it fit correctly but is still a little too low all around for me. Nearly no panty lines under leggings. No wedgies. Just because of the slightly awkward low fit under my postpartum pooch, it will be something I pull out of my drawer when my others are dirty.

    For all Knix leakproof underwear I've purchased recently, I wish the front liner went about 1" higher up in the front.

    Emily M.
    Verified Buyer
    Was this helpful?