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Color: Warm Sand
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Color: Warm Sand

Size:

Size:

Mix & Match: 3+ for $25 each
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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

| Love Potion
| Love Potion
| Love Potion
| Love Potion
| General
| General
 | General
| General
| General

Color: Love Potion 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 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.

Zoom

| Love Potion
| Love Potion
| Love Potion
| Love Potion
| 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 516 reviews
Total 5 star reviews: 375 Total 4 star reviews: 58 Total 3 star reviews: 37 Total 2 star reviews: 15 Total 1 star reviews: 31
87%would recommend these products
ComfortRated 4.4 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
516 reviews
  • Rated 5 out of 5 stars
    3 minutes 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
    1 week 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
    3 weeks ago
    Leakproof ultrathin French cut

    My favourite style of underwear. Always fit perfectly!

    Cindy D.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Cute

    So glad to ditch the bulky pads and experience more freedom and comfort.

    F o. D.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    fantastic

    love this underwear i really like the french cut they fit me perfect so comfortable no bulges just smooth and the protection is so good i bought 3 and then went back to buy another 3 and ill be back to buy more

    linda f.
    Verified Buyer
  • Rated 5 out of 5 stars
    4 weeks ago
    French cut panties

    Excellent coverage….love

    Deborah B.
    Verified Buyer
  • Rated 5 out of 5 stars
    4 weeks ago
    Fabulous briefs

    In an effort to save money, I bought alternate brand leakproof briefs. No comparison to Knix silky feel, invisible panty line or leak protection. My new goal is to stock up during Knix sales. Great product, second to none.

    Evelyn S.
    Verified Buyer
  • Rated 4 out of 5 stars
    1 month ago
    Leakproof ultra thin French cut no show

    Love the material. fit was good (size Sm French cut ) but found they are not tight enough around the butt area and ride a little higher in the butt area than my regular French cut by jockey.

    Would you suggest trying the briefs instead of French cut next time?

    Love the whole idea of leak protection. And no show is really true.

    Grace P.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Ultra thin, French Cut

    I love these panties. I will purchase more!

    Janis B.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Just perfect!

    True to size, soft and comfy!

    Sabrina H.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Love the pattern and fit. Super comfortable

    Marie
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Comfortable and Reliable

    Soft, comfy and effective. They feel like regular underwear but give me leakproof protection and no-show lines. Love them!

    Karen T.
    Verified Buyer