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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

Ultra Leakproof Zones+® Bikini

$36.00 CAD

Mix & Match: 3+ for $33 each
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Absorbs about 9 super tampons

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Invisible under clothes

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Extended gusset for extra protection

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Machine washable

| Black
| Black
| Black
| Black
Made with soft, stretchy fabric that’s quick dry for your comfort | General

Made with soft, stretchy fabric that’s quick dry for your comfort

Designed with extra long protective coverage in the front & back | General

Designed with extra long protective coverage in the front & back

Washes just like regular underwear | General

Washes just like regular underwear

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 36 Points

"When Mother Nature decides to bless you with her presence on leg day, bust out this pair for a workout that’s as comfortable as possible."

- InStyle

Comfort-First Fit

Bikini silhouette with a mid-rise fit and medium hip and bum coverage.

Worry-Free Protection

Our most absorbent underwear features an extra-long liner that runs high in the front and up the back. Patented 360 LeakSeal™ technology provides leakproof protection at every edge.

Ultra Absorbency

Absorbs 9 super tampons worth of liquid—great for heavy flow days, overnight protection, and light bladder leaks.

No-Show Style

Made from our signature buttery-soft PerformaStretch® fabric, it appears invisible under clothing.

Easy to Wash

Machine washable just like regular underwear.

Zoom

| Black
| Black
| Black
| Black
Made with soft, stretchy fabric that’s quick dry for your comfort | General
Designed with extra long protective coverage in the front & back | General
Washes just like regular underwear | 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.

Absorbs about 7-9 super tampons worth of liquid.

Soft Top Layer

Soft Top Layer

Gently wicks away moisture while keeping you feeling fresh and odor-free.

4.1
Rated 4.1 out of 5 stars
Based on 388 reviews
Total 5 star reviews: 240 Total 4 star reviews: 43 Total 3 star reviews: 39 Total 2 star reviews: 22 Total 1 star reviews: 44
78%would recommend these products
ComfortRated 4.1 on a scale of 1 to 5
EffectivenessRated 4.1 on a scale of 1 to 5
FitRated 0.2 on a scale of minus 2 to 2
Ease of UseRated 4.2 on a scale of 1 to 5
388 reviews
  • Rated 2 out of 5 stars
    3 weeks ago
    Im sorry but feel baggy in the backside and my husband told me he could sme urine

    They feel baggy in the back and odour of urine is noticable

    Vicki P.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Works great!

    Bought these for my daughter. She loves them for overnight and heavy days. Very comfortable!

    Stacie N.
    Verified Buyer
  • Rated 5 out of 5 stars
    4 weeks ago
    Zones leakproof

    Works well for all coverage and comfortable for sitting

    Charlene B.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Ultra Leakproof Zones + Bikini

    Loved the style, fit and color.

    Mary J. D.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Peace of mind for Seniors

    My mom is recovering from a brain operation, which had her incontinent for a while. In trying to transition her out of Depends, we thought this would be the perfect solution.

    She can wear normal underwear again and have back up, should she have a day where things don’t go as smoothly for her as she had hoped.

    I rated a 4/5 for protection because thankfully she has not had an accident so I am not able to accurately rate this, but from everything I hear from people there would be no worries!!

    Cherie C.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    Midrise

    Love the fit and cover.

    Lisa F.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Amazing product! I never have to worry about leaking on the heaviest nights!

    Tina
    Verified Buyer
  • Rated 4 out of 5 stars
    1 month ago
    Runs Small

    I’m usually an extra large and found they ran too small. Did an exchange for xxl and they fit perfect.

    Diane H.
    Verified Buyer
  • Rated 1 out of 5 stars
    1 month ago
    Super French Cut

    I don’t know how this classifies as a “classic” bikini because it is a super high French cut. Only like half a butt cheek is covered and I can’t fathom how this would comfortable during a heavy flow day. Not at all consistent with my other Knix bikini cut styles which for great.

    Anonymous
  • Rated 5 out of 5 stars
    1 month ago
    Super comfy

    I am so impressed with all the options. They work and the look and feel great

    Terri B.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 month ago
    5 Stars

    So comfortable. Will definitely buy again.

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

    Love these!

    Wanda
    Verified Buyer