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Color: Black
Best Seller

Color: Black

Size:

Size:

Size and Fit Guide

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

Light Leakproof No-Show Mesh Bikini

$25.00 CAD

Mix & Match: 3+ for $20 each
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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

Claire has 35

Claire has 35" hips, 24" waist and wears a Knix size S

Claire has 35

Claire has 35" hips, 24" waist and wears a Knix size S

Claire has 35

Claire has 35" hips, 24" waist and wears a Knix size S

 | General

Claire has 35" hips, 24" waist and wears a Knix size S

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

"...the most comfortable period underwear I've ever tried."

- Good Housekeeping

Comfort-First Fit

This mesh bikini-style underwear offers medium coverage for the hips and bum.

Worry-Free Protection

Our original leakproof technology offers a barely there feel while 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.

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Claire has 35
Claire has 35
Claire has 35
 | 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
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.

4.7
Rated 4.7 out of 5 stars
Based on 252 reviews
Total 5 star reviews: 210 Total 4 star reviews: 24 Total 3 star reviews: 7 Total 2 star reviews: 6 Total 1 star reviews: 5
93%would recommend these products
ComfortRated 5.0 on a scale of 1 to 5
EffectivenessRated 5.0 on a scale of 1 to 5
FitRated 0.0 on a scale of minus 2 to 2
Ease of UseRated 5.0 on a scale of 1 to 5
252 reviews
  • Rated 5 out of 5 stars
    5 months ago
    Great! Wish I bought light leakproof

    I love these underwear. They worked great. I ordered 4 medium leakproof. Wish I ordered 2 light leakproof, probably will soon.

    Amy L.
    Verified Buyer
  • Rated 5 out of 5 stars
    6 months ago
    Modern take on leakproof underwear

    Functional and still sexy!

    Cassie
    Verified Buyer
  • Rated 5 out of 5 stars
    6 months ago
    5 Stars

    Works as expected

    Yolande
    Verified Buyer
  • Rated 5 out of 5 stars
    7 months ago
    The best!

    I wish these came in more colors bc these are so comfortable. I need to buy in bulk.

    Holly F.
    Verified Buyer
  • Rated 1 out of 5 stars
    7 months ago
    1 Star

    Hate how big the leakproof area is.

    Renee
  • Rated 5 out of 5 stars
    8 months ago
    5 Stars

    Comfortable and effective

    Susan
  • Rated 5 out of 5 stars
    8 months ago
    Comfy

    Love these so much. Fit is perfect.

    Happy B.
    Verified Buyer
  • Rated 5 out of 5 stars
    9 months ago
    2nd purchase they’re comfy

    Comfy not full coverage great for pre period or with tampon instead of liner true to size 2x = 18-20

    Eryn S.
    Verified Buyer
  • Rated 5 out of 5 stars
    9 months ago
    Great product

    Peace of mind, is the main thing. I wear these everyday,

    Christine J.
    Verified Buyer
  • Rated 5 out of 5 stars
    9 months ago
    Perfect!

    Great fit and style.

    Heidi A.
    Verified Buyer
  • Rated 5 out of 5 stars
    9 months ago
    5 Stars

    Great fit good quality

    Eryn
    Verified Buyer
  • Rated 5 out of 5 stars
    9 months ago
    5 Stars

    Perfect for comfortable and good for lightest leaks

    Eryn
    Verified Buyer