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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

Leakproof UltraThin No-Show French Cut

$27.00 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

Isabelle has 40” hips and wears a Knix size M | Rose Water

Isabelle has 40” hips and wears a Knix size M

Isabelle has 40” hips and wears a Knix size M | Rose Water

Isabelle has 40” hips and wears a Knix size M

Isabelle has 40” hips and wears a Knix size M | Rose Water

Isabelle has 40” hips and wears a Knix size M

| General
| General
 | General
| General
| General

Isabelle has 40” hips and wears a Knix size M

Color: Rose Water

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 27 Points

"They are so comfy I'm tempted to wear them even when I'm NOT bleeding!"

- Daily Mail

Comfort-First Fit

A classic mid-rise silhouette that provides medium bum coverage.

Worry-Free Protection

Our newest leakproof innovation provides more absorbency without the bulk. Patented 360 LeakSeal™ technology locks in leaks at every edge.

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.

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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Isabelle has 40” hips and wears a Knix size M | Rose Water
Isabelle has 40” hips and wears a Knix size M | Rose Water
Isabelle has 40” hips and wears a Knix size M | Rose Water
| General
| General
 | 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.

4.4
Rated 4.4 out of 5 stars
Based on 525 reviews
Total 5 star reviews: 383 Total 4 star reviews: 59 Total 3 star reviews: 37 Total 2 star reviews: 15 Total 1 star reviews: 31
87%would recommend these products
ComfortRated 4.5 on a scale of 1 to 5
EffectivenessRated 4.4 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
525 reviews
  • Rated 5 out of 5 stars
    3 minutes ago
    Soft, comfy

    Love these! Not visible under pants or skirts.

    Gina L.
    Verified Buyer
  • Rated 5 out of 5 stars
    27 minutes ago
    Love them

    Love them

    Brenda C.
    Verified Buyer
  • Rated 5 out of 5 stars
    11 hours ago
    fits beautifully

    love your products

    Lynne R. C.
    Verified Buyer
  • Rated 5 out of 5 stars
    23 hours ago
    Life changing purchase!

    I am confident, comfortable and satisfied with everything about Knix! Even when I had an issue with a minor product defect, Knix made sure I was satisfied with my purchase and replaced the item.

    Amy K.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Wonderful!

    I finally got the right size!

    Amy K.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Leak proof panty

    Love this underwear! I always wear a liner and now I can wear underwear without a pad. I highly recommend to everyone.

    Nicole G.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Love Knix

    Great product. Definitely will buy again and worth the pricing

    Audrey C.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Comfy and effective

    These panties really work for leaks & sweat. And they are super comfy. I've been a fan of Knix for a while. They don't disappoint.

    Lialette B.
    Verified Buyer
  • Rated 4 out of 5 stars
    1 week ago
    Size Off

    I bought Knix a few years ago, a period thong and period briefs. Just ordered 3 of these to update my selection. Ordered a Medium like previously (which still fit me great, if not a little big). Bad news, they are smaller now than my original pairs. Great news, same great quality. If you’re in between sizes I suggest going up.

    Taylor
  • Rated 5 out of 5 stars
    1 week ago
    Love These Panties

    Love French cut which are hard to find especially in leak-proof. These panties feel so good and the are so thin but do their job.

    LISA H.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Knix leak proof

    Really amazing product. So glad I ordered. I intend to order again.

    Elaine P.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Leakproof ultrathin French cut

    My favourite style of underwear. Always fit perfectly!

    Cindy D.
    Verified Buyer