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SuperPlus Leakproof® No-Show High Rise

Our longest, most absorbent liner—ever.
$39.00 CAD

Mix & Match: 3+ for $33 each
Ashley has 39” hips and wears KNIX S | Black

Ashley has 39” hips and wears KNIX S

| Black
Ashley has 39” hips and wears KNIX S | Black

Ashley has 39” hips and wears KNIX S

Ashley has 39” hips and wears KNIX S | Black

Ashley has 39” hips and wears KNIX S

| General

Ashley has 39” hips and wears 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 39 Points

Comfort-First Fit

High-rise silhouette sits at your natural waist and offers medium coverage for the bum, combining comfort with a flattering fit.

Ultimate Leakproof Protection

Our longest, most absorbent liner ever—front-to-back coverage without the bulk.

Day & Night Comfort

Buttery-soft stretch fabric moves with you, while bonded seams keep leaks contained and create a smooth, seamless look under clothing.

Machine Washable

Wash just like your regular underwear—easy, everyday care.

Zoom

Ashley has 39” hips and wears KNIX S | Black
| Black
Ashley has 39” hips and wears KNIX S | Black
Ashley has 39” hips and wears KNIX S | Black
| 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
    about 8-14 tsp
  • pad
    about 1.5-3 regular pads
  • tampon
    about 4-7 super tampons
  • cup
    about 1.5-3 menstrual cups

Light

Drop
Drop
Drop
Drop
Drop
  • light period days
  • sweat
  • 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 4-8 tsp
  • pad
    about 1-1.5 regular pads
  • tampon
    about 2-4 super tampons
  • cup
    about 0.5-3 menstrual cups

Ultra

Drop
Drop
Drop
Drop
Drop
  • extra heavy period days
  • overnight protection
  • light bladder leaks
  • tsp
    about 15-20 tsp
  • pad
    about 1.5-2.5 super pads
  • tampon
    about 7-11 super tampons
  • cup
    about 2-3 menstrual cups
PATENTED LEAKPROOF TECHNOLOGY

Our longest, most absorbent liner—ever.

Our original Fresh Fix Technology® features a built-in absorbent liner that soaks up about 7–11 super tampons’ worth of liquid—so you stay fresh, comfortable, and in control.

Soft Top Layer

Soft Top Layer

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

4.4
Rated 4.4 out of 5 stars
Based on 8 reviews
Total 5 star reviews: 6 Total 4 star reviews: 0 Total 3 star reviews: 1 Total 2 star reviews: 1 Total 1 star reviews: 0
75%would recommend this product
ComfortRated 3.5 on a scale of 1 to 5
EffectivenessRated 4.5 on a scale of 1 to 5
FitRated 0.3 on a scale of minus 2 to 2
Ease of UseRated 4.0 on a scale of 1 to 5
8 reviews
  • Rated 3 out of 5 stars
    21 seconds ago
    Super plus leakproof

    I appreciate that this new brief can also be used for bladder leaks. I do find it a bit bulky though. I’m not sure if I need a small rather than a medium. I am worried the small may be too tight in the waist.

    Janice M.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 hour ago
    Love these for anytime

    I find as I have gotten older things are changing. I love the fact that these go all the way up the back. Extra protection.

    Totally recommend these new underwear

    Tara O.
    Verified Buyer
  • Rated 5 out of 5 stars
    17 hours ago
    Love them

    I ordered 4 more. They are comfortable and give me the protection for my urinary needs

    Denise A.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 days ago
    5 Stars

    Knix service was outstanding!

    Janet
  • Rated 2 out of 5 stars
    2 days ago
    Super plus leakproof

    Love the idea of not having to use pads for protection and was hoping this underware was the solution. However for me they were not high rise enough, my waist is above my belly button and the legs are cut to high and I found I got a wedgy wearing them. Tried wearing them a little lower but still had issues with them riding up, for me they need to have more butt coverage. Love the fabric and the amount of padding but the fit was all wrong. Initially I purchased a large and thought maybe I didn’t have the correct size so exchanged them for an XL but they were to baggie in the butt and if pulled up to my waist I had them riding up into a wedgy.

    Donna R.
    Verified Buyer
  • Rated 5 out of 5 stars
    6 days ago
    5 Stars

    Loce the fit and protection.

    Nevine
  • Rated 5 out of 5 stars
    6 days ago
    5 Stars

    Great period underwear.

    Nevine
  • Rated 5 out of 5 stars
    6 days ago
    5 Stars

    Love

    Nevine