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SuperPlus Leakproof® No-Show High Rise

$39.00 CAD

Mix, Match & Save: 3+ for $33 each
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Absorbs 7-11 super tampons

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Front-to-back liner

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Bonded seams prevent leaks

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Machine washable

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

Sale & Last Call

Items discounted 30% and below are eligible for size exchange or store credit. Items discounted above 30% and above are final sale – no refunds, store credits, or exchanges can be accommodated.

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.

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.

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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.

4.2
Rated 4.2 out of 5 stars
Based on 94 reviews
Total 5 star reviews: 67 Total 4 star reviews: 5 Total 3 star reviews: 6 Total 2 star reviews: 5 Total 1 star reviews: 11
77%would recommend this product
ComfortRated 4.2 on a scale of 1 to 5
EffectivenessRated 4.2 on a scale of 1 to 5
FitRated 0.1 on a scale of minus 2 to 2
Ease of UseRated 4.4 on a scale of 1 to 5
94 reviews
  • Rated 5 out of 5 stars
    10 hours ago
    Comfortable!

    These are so comfortable! I upgraded from older Knix and these are so much slimmer, but just as absorbent.

    Jaime B.
    Verified Buyer
  • Rated 5 out of 5 stars
    4 days ago
    Perfect

    These are everything I've looked for. Front to back coverage, plenty of leg room, generous fit without being loose.

    Sarah K.
    Verified Buyer
  • Rated 5 out of 5 stars
    5 days ago
    SuperPlus Leakproof

    very good

    Janice G.
    Verified Buyer
  • Rated 5 out of 5 stars
    5 days ago
    Gift to my daughters

    They love this underwear a great gift they are very happy

    Joy F.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Very best incontinence underwear I have found!!

    The Knix incontinence underwear is really, really nice. I love them! The material is wonderful and the fit is great. Just make sure to refer to the size chart before ordering as I made a mistake with the size the first time I ordered. This brand and style will be my new “go to” underwear, moving forward. They were a bit pricey, but well worth the investment. Thank you, Knix!!!!!

    Anne C.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    First time using Knix

    I love them. I only became aware of Knix a few months ago via my gynaecologist who had great things to say about them. I had developed a severe allergy to panty liners and was at a loss as to what to use. (I was in an accident that caused nerve damage to my bladder). Since I started wearing Knix underwear my dermatitis has cleared up and I know any unexpected urine leaks will not cause embarrassment. The best part is once again I feel as if I’m wearing ordinary underwear again. It’s wonderful.

    Chanda R.
    Verified Buyer
  • Rated 5 out of 5 stars
    1 week ago
    Thoughtful design, perfect function

    The design that puts the absorption layer goes up the back is brilliant! As a wheelchair user I spend most of my time seated and other designs just don’t provide as much protection as these do. I imagine that a person who spends time seated would be served well by these underwear. They’re also great for sleeping in as the coverage is sufficient, but not overdone. It strikes a very nice balance between feminine and pretty and functionality. I highly recommend.

    Sara L.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 weeks ago
    Very happy

    They are very comfortable and hold the liquid...especially when I sneeze 🤣👍.

    Jeans slide nicely over them, they stay in place not like cotton underwear.

    Deborah L.
    Verified Buyer
  • Rated 5 out of 5 stars
    2 weeks ago
    Best product I have tried

    These panties are great. So far I have had no leaks that haven’t been contained. I would recommend these highly. They laundry well. Best I have tried.

    Rebecca M.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Perfect Fit!

    I recently decided to try out a bigger size in the leakproof underwear as i felt i wasnt getting enough coverage. These fit soo much better! They are so comfortable and no seams when wearing leggings, etc.

    Desiree K.
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Works for heavy days and overnight - no leaks!

    This is a long review, but it touches on absorbency, fit, comfort, and after care.

    I'm always looking for more environmently-friendly, reusable options for my period products, and have been working to get away from pads and tampons; however, I haven't been able to find the right fit...until now. My flow is very heavy day 1 and 2 - I go through several super plus tampons or heavy pads, and leak through the night often. These really do absorb the way they advertise and no leaks. I was also able to wear for several hours before being able to change with no issues at all. They are comfortable to wear and don't feel wet, which was something I worried about before trying.

    For sizing, I feel like they are true to size. I went with the xxl, and usually wear plus size 1X clothes or xxl. This particular style fits slightly more snug at that size than the other, less absorbent, styles, but still very comfortable. The material is soft and stretchy.

    Also on this particular style, the pad area goes from front to back and is thicker than the others. I read reviews that said it felt like a diaper, but I don't feel that way. It's less invasive than a thick pad, and much more comfortable, but it's still something to consider.

    These washed well on a regular cold cycle in my washing machine and were hung to dry. No absorbency or significant fit issues noted after washing.

    JP
    Verified Buyer
  • Rated 5 out of 5 stars
    3 weeks ago
    Just love these

    Finally!

    Leakproof that REALLY works!!!

    Dorene M.
    Verified Buyer