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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
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Leakproof UltraThin No-Show High Rise

$32.00 CAD

Mix & Match: 3+ for $25 each
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Absorbs about 2.5 super tampons

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Invisible under clothes

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Moderate protection without the bulk

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Machine washable

| Cosmic
| Cosmic
| Cosmic
| General
| General
| General

Color: Cosmic Limited Edition

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 32 Points

“Best seamless absorbent underwear"

- Women's Health

High Rise Silhoutte

Sits just above the natural waist. Full coverage through the stomach, hip, and bum.

Moderate Absorbency

Absorbs 2.5 super tampons worth of liquid—perfect for moderate flow days, light bladder leaks, and sweat. The carbon cotton gusset top layer keeps you dry.

Worry-Free Protection

Perfect for moderate period days, light bladder leaks, and sweat. Moisture-wicking liner keeps you dry and comfortable.

No-Show Style

Buttery-soft and smooth fabric gives a seamless look and feel. Disappears under clothes, even leggings.

Easy to Wash

Machine washable just like regular underwear.

Zoom

| Cosmic
| Cosmic
| Cosmic
| General
| 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
FRESH FIX TECHNOLOGY®

Built-in protection that feels like nothing at all.

Our patented 360 LeakSeal™ technology locks in leaks at every edge. The ultra-thin liner absorbs about 2.5 super tampons worth of liquid.

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 925 reviews
Total 5 star reviews: 726 Total 4 star reviews: 93 Total 3 star reviews: 47 Total 2 star reviews: 21 Total 1 star reviews: 38
90%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 0.0 on a scale of minus 2 to 2
Ease of UseRated 4.7 on a scale of 1 to 5
925 reviews
  • Rated 5 out of 5 stars
    2 weeks ago
    Great

    Comfy, good fit.

    Lindy J.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 weeks ago
    Super comfy

    They are awesome, comfy, absorbent!!!

    Carla C.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 weeks ago
    Knix high rise

    They are leakproof

    Cathy W.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 weeks ago
    Leakproof ultra thin no-show high rise

    Great alternative to disposable bladder leak pads

    Ewhenia G.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 weeks ago
    Leakproof ultra thin no show high rise

    Great alternative to disposable bladder leak pads

    Ewhenia G.
    Verified Buyer
  • Rated 1 out of 5 stars
    2 weeks ago
    Weird Fit, bulky

    These and the high rise mesh ones I got are both rather bulky and they're baggy in the butt. I exchanged and tried the next size down only to discover that the only difference in size was around the waist! Still baggy, the pad part still feels bulky and cardboard-y, and as far as keeping you dry, it does NOT. I wanted them for when it's summery and I sweat, all they do is get wet just like regular old underpants that DON'T cost $30! Don't waste your money. What a disappointment because I spent a LOT of money on these things and I can't get a refund.

    Heather B.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Very high-rise

    More high-rise than other brands. More than I was expecting. Quality of product is amazing. However will not be purchasing again. I’ll go for a mid-rise next time.

    Julie U.
    Verified Buyer
  • Rated 1 out of 5 stars
    3 weeks ago
    First & Last Knix experience

    Shipping and service was great!! It is very comfortable!! I love the feel on my skin but definitely not leakproof and now the most expensive underwear I own but will probably never wear. Good thing I only bought one instead of the bundle pack. I leaked after wearing it for an hour. The bikini lines rolled up and majority of my flow leaked out. My periods are medium to light and only 3-4 days.

    Shay D.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Great product

    Excellent product… Would definitely recommend to others

    Heather H.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    no show high rise

    I still would prefer a brief

    GERALDINE l.
    Verified Buyer
  • Rated 5 out of 5 stars
    4 weeks ago
    Comfortable

    Very happy with these, as I was a bit Leary at first. May need to get a few more pair ;) all

    Different leak ratings.

    Jane C.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Comfort, and security.

    Knix has given me a sense of freedom from pads. They’re comfortable, light weight, they fit nicely. Well worth the price.

    Vicki K.
    Verified Buyer