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Color: Warm Sand
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Color: Warm Sand

Size:

Size:

Mix & Match: 3+ for $25 each
Rewards Members Earn 0 Points

Light Leakproof No-Show Mesh High Rise

$29.00 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

Anupa King is wearing KNIX S | Black

Anupa King is wearing KNIX S

| Black
Anupa King is wearing KNIX S | Black

Anupa King is wearing KNIX S

Anupa King is wearing KNIX S | Black

Anupa King is wearing KNIX S

Molly has 35.5” hips, and wearing KNIX S | Black

Molly has 35.5” hips, and wearing KNIX S

| General
Molly has 35.5” hips, and wearing KNIX S | Black

Molly has 35.5” hips, and wearing KNIX S

Molly has 35.5” hips, and wearing KNIX S | Black

Molly has 35.5” hips, and wearing KNIX S

Anupa King is 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 29 Points

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

- Good Housekeeping

Comfort-First Fit

This high-rise style sits at the natural waistline 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

Anupa King is wearing KNIX S | Black
| Black
Anupa King is wearing KNIX S | Black
Anupa King is wearing KNIX S | Black
Molly has 35.5” hips, and wearing KNIX S | Black
| General
Molly has 35.5” hips, and wearing KNIX S | Black
Molly has 35.5” hips, and wearing KNIX S | Black

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.

4.5
Rated 4.5 out of 5 stars
Based on 593 reviews
Total 5 star reviews: 458 Total 4 star reviews: 62 Total 3 star reviews: 27 Total 2 star reviews: 21 Total 1 star reviews: 25
89%would recommend these products
ComfortRated 4.5 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 4.7 on a scale of 1 to 5
593 reviews
  • Rated 5 out of 5 stars
    3 minutes ago
    It’s ok

    What do I have available to me without wearing what I call diapers

    Vicki R.
    Verified Buyer
  • Rated 5 out of 5 stars
    Yesterday
    Light and easy

    I love these undergarments as they are light, move easily with your body (at times, it feels like you're not wearing undergarments, while providing protection when you need it. This is the only type of undergarments I now wear.

    Mary O.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Mesh High Rise

    High performing, easy fit, very comfortable.

    Dorothy G.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Soooooo beautiful!

    These are perfectly absorbant and so pretty! The mesh and velvet detail is really nice.

    Courtney T.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    I love them

    I feel really good and sexy in them

    Thank you

    Vasiliki M.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Beautiful style and fit

    Love the mesh inserts and great color choices

    I have 8 pair now and have become a bit of a collector

    Carole
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    I adore knix period underwear

    What a genius idea in general and knix does it right. I love all my underwear in the different shades of the rainbow. I will continue to purchase more.

    Robyn L.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Comfortable fit

    Nice to use on hot humid days- not as hot as other brands.

    Lynn S.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Great comfort!

    I tried these during a vacation, concerned about toilet access frequency. They are a comfort to have on and comfortable to wear. Not as hot as others I’ve tried, in the Florida heat.

    Lynn S.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 months ago
    comfortable

    I would prefer a brief as opposed to high rise

    GERALDINE l.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 months ago
    These are the greatest!

    I tried these light leakproof no-show mesh high rise underwear recently and absolutely fell in love with them. They are so comfortable that I immediately had to buy several more pairs.

    Kathleen C.
    Verified Buyer
  • Rated 3 out of 5 stars
    2 months ago
    Okay fit.

    I thought these might be a little different from the full size kind. Yes and no. They pull the stomach in, but are not as comfortable as the regular Knix’s.

    Lisa R.
    Verified Buyer