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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
Best Seller

Light Leakproof No-Show Thong

$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

Gin has 38” hips, and wearing KNIX S | Black

Gin has 38” hips, and wearing KNIX S

| Black
Gin has 38” hips, and wearing KNIX S | Black

Gin has 38” hips, and wearing KNIX S

Gin has 38” hips, and wearing KNIX S | Black

Gin has 38” hips, and wearing KNIX S

| General
 | General

Gin has 38” hips, and wearing KNIX 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

"I was immediately hooked. Knix's absorbent underwear provides backup protection by holding up to one tampon of liquid"

- Glamour

Comfort-First Fit

This thong style sits lower on the hips with minimal bum coverage.

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.

Zoom

Gin has 38” hips, and wearing KNIX S | Black
| Black
Gin has 38” hips, and wearing KNIX S | Black
Gin has 38” hips, and wearing KNIX S | Black
| 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
    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.

4.6
Rated 4.6 out of 5 stars
Based on 2,050 reviews
Total 5 star reviews: 1.6k Total 4 star reviews: 255 Total 3 star reviews: 74 Total 2 star reviews: 44 Total 1 star reviews: 60
93%would recommend these products
ComfortRated 4.6 on a scale of 1 to 5
EffectivenessRated 4.6 on a scale of 1 to 5
FitRated -0.1 on a scale of minus 2 to 2
Ease of UseRated 4.3 on a scale of 1 to 5
2,050 reviews
  • Rated 5 out of 5 stars
    2 weeks ago
    Yes!!!

    I will only buy Knix underwear and these are a type that I like. They fit well and are super comfy ! Grab a pair today. I love this type as well. Can’t go wrong with any pair of underwear from Knix.

    Michelle K.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 weeks ago
    Awesome underwear!

    I will only buy Knix underwear and these are a type that I like. They fit well and are super comfy ! Grab a pair today.

    Michelle K.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Perfect title

    I also like this thong, very comfortable hardly even know it’s and it’s reassuring to have the extra layer in the crutch of the panties

    Jocelyn C. M.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Surprisingly comfortable

    Comfortable, cute, and served their purpose. Will be buying more.

    Maria Z.
    Verified Buyer
  • Rated 1 out of 5 stars
    4 weeks ago
    Love the underwear

    I love the kind light for working out. I bought white ones to wear under white shorts, but the liner is visible through (and is black). It defeats the purpose. I am disappointed

    Lianne G.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Great!

    Highly recommend as period protection

    Leilani P.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Super comfortable!

    Will definitely be purchasing more of these!!

    Dianne G.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Great so far!

    Comfortable!

    Katrina R.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Knix Leakproof underwear is so comfortable, you won't even know you are wearing them. Highly recommend.

    Crystal
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Love them

    Julie
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Good product

    I like it !

    Karine C.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Perfect

    I live these and I think they’ll last a long time. They are made well.

    Wendy N.
    Verified Buyer