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Super Leakproof® Cotton Bikini

$32.00 CAD

Buy 3+ Save 15%, Buy 5+ Save 20%

Absorbs about 6 super tampons

Breathable cotton

More absorbency without the bulk

Machine washable

| Lavender
| Lavender
| Lavender
| Lavender
 | General

Color: Lavender Limited Edition

Size:

True to Size

Size:

Size and Fit Guide

Leakproof Underwear is Sales Tax Free in Canada*

Build Your 3-Pack

Super Leakproof® Cotton Bikini

Color: Lavender Limited Edition

Size:

Size:

Super Leakproof® Cotton Bikini

Color: Lavender Limited Edition

Size:

Size:

Super Leakproof® Cotton Bikini

Color: Lavender Limited Edition

Size:

Size:

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.

First Pair Risk Free for 30 Days

Leakproof Underwear, Risk Free

Returns & Exchanges

New to leakproof? Your first pair is risk free for 30 days. Wear them, wash them, and see how they work for your body. Not right for you? We'll refund the item price (original shipping excluded). Prefer a different size or style? We also offer free exchanges. Just email info@knix.com and we'll take care of you.

Purchased leakproof before? Within 30 days of delivery you can exchange for another size, style, or store credit. We're unable to provide refunds on underwear. If you ordered multiple pairs, please open, wash, and wear one pair only before initiating an exchange.

Still have questions? View our full policy here.

Rewards Members Earn 32 Points

Comfort-First Fit

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

Heavy Absorbency

Absorbs 6 super tampons worth of liquid—perfect for heavy flow days, overnight protection, and light bladder leaks.

Cozy Cotton-Blend

Soft cotton with a hint of spandex feels luxurious against your skin.

Worry-Free Protection

Innovative floating liner provides leak protection from every angle.

Easy to Wash

Machine washable just like regular underwear.

Zoom

| Lavender
| Lavender
| Lavender
| Lavender
 | General

How to Choose?

Essential

  • Days you don’t need leak protection. Everyday freshness and moisture wicking.
  • tsp
    0 tsp

Heavy

  • Extra peace of mind. For the first days of your cycle, light bladder leaks, or a full night's sleep without a leak.
  • 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

  • Daily freshness. For sweat, discharge, period spotting, or backup protection.
  • tsp
    about 1-3 tsp
  • pad
    about 1-3 pantyliners
  • tampon
    about 1-3 regular tampons
  • cup
    about 0.5 menstrual cups

Moderate

  • For mid-cycle flow, surprise cough or sneeze leaks, or a really sweaty spin class.
  • 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

  • Ultimate peace of mind. For the heaviest period days, light bladder leaks, unexpected postpartum flow, or overnight protection.
  • 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®

Cotton meets patented protection.

A sewn-in, floating liner soaks up about 6 super tampons’ worth of liquid—so you stay fresh, comfortable, and in control.

Soft Top Layer

Gently wicks away moisture to keep you fresh and odor-free.

3.5
Rated 3.5 out of 5 stars
Based on 27 reviews
Total 5 star reviews: 11 Total 4 star reviews: 4 Total 3 star reviews: 5 Total 2 star reviews: 2 Total 1 star reviews: 5
56%would recommend this product
ComfortRated 3.6 on a scale of 1 to 5
EffectivenessRated 4.0 on a scale of 1 to 5
FitRated 0.0 on a scale of minus 2 to 2
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Pant Size Purchased
27 reviews
  • Rated 5 out of 5 stars
    4 days ago
    Switching to Cotton!

    This was my first pair of cotton from Knix and I am in love. I am going to replace what I have with cotton, moving forward. Its soft, comfortable, and theleakproof features are as trustworthy as all my other pairs. This color is cute, I'm hoping for fun cotton prints in the future as well.

    Sherrie R.
    Verified Buyer
    Reviewing
    Super Leakproof® Cotton Bikini
  • Rated 5 out of 5 stars
    1 week ago
    Love Knix Leakproof

    The look as pictured do as described.

    Laurie G.
    Verified Buyer
    Reviewing
    Super Leakproof® Cotton Bikini
  • Rated 5 out of 5 stars
    2 weeks ago
    My favourite so far

    I have 3 models and this one is my favourite by far.

    Mel1513
    Verified Reviewer
    Reviewing
    Super Leakproof® Cotton Bikini
  • Rated 5 out of 5 stars
    3 weeks ago
    Obsessed!

    I’m so in love with these underwear. They’re so comfortable and perfect for when I’m on my period and bloated.

    Brittany B.
    Verified Buyer
    Reviewing
    Super Leakproof® Cotton Bikini
  • Rated 5 out of 5 stars
    4 weeks ago
    Period Panties

    I bought these panties to try as primary period protection as I was sick of tampons and pads. My periods can be quite heavy with a lot of clots and these panties held up! No leaks. It’s unreal how much blood these panties can hold!

    Amanda J.
    Verified Buyer
    Reviewing
    Super Leakproof® Cotton Bikini
  • Rated 5 out of 5 stars
    1 month ago
    Goodbye Poise!

    These are a total game changer! They provide enough protection for bladder leaks too which is very comforting.

    Carrie N.
    Verified Buyer
    Reviewing
    Super Leakproof® Cotton Bikini
  • Rated 5 out of 5 stars
    1 month ago
    Loving the cotton

    Love the cotton. So comfortable and high quality like all your products. Thank you.

    Heidi L.
    Verified Buyer
    Reviewing
    Super Leakproof® Cotton Bikini
  • Rated 5 out of 5 stars
    1 month ago
    Super Comfy

    The cotton is so soft and seems to break in a little with time but doesn’t loose its shape. Perfect everyday companions!

    Brittany R.
    Verified Buyer
    Reviewing
    Super Leakproof® Cotton Bikini
  • Rated 5 out of 5 stars
    1 month ago
    the best panties

    love!

    Teresa S.
    Verified Buyer
    Reviewing
    Super Leakproof® Cotton Bikini
  • Rated 5 out of 5 stars
    2 months ago
    5 Stars

    It was soft and not bulky. I felt like I was wearing regular underwear. It stayed in place and I never really thought about it. I just went on with my day.

    Sarah P.
    Reviewing
    Super Leakproof® Cotton Bikini
  • Rated 5 out of 5 stars
    2 months ago
    5 Stars

    The garment maintained it's shape nicely and the stretch was comfortable, not too tight or loose and wasn't bothered. I found these bikini underwear to be very comfortable. Nothing was rubbing, stretching or too tight.

    Courtney W.
    Reviewing
    Super Leakproof® Cotton Bikini
  • Rated 4 out of 5 stars
    3 weeks ago
    Cotton Bikini Knix

    I love the product!!! I prefer the wider band at the top versus the thinner band.

    M C.
    Verified Buyer
    Reviewing
    Super Leakproof® Cotton Bikini

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