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Nouvelles couleurs

SuperPlus Anti-Fuite® Taille Haute Invisible

$39.00 CAD

Achetez 3 et plus, économisez 15 %, achetez 5 et plus, économisez 20 %

Absorbe l'équivalent de 7 à 11 tampons super

Doublure intégrale de l'avant à l'arrière

Coutures collées anti-fuites

Lavable en machine

Front view of model wearing the SuperPlus Leakproof® No-Show High Rise highlighting the coverage and smooth fit

Ashley has 39” hips and wears KNIX S

SuperPlus Leakproof® No-Show High Rise shown front-facing against a light gray background
Back view of model wearing the SuperPlus Leakproof® No-Show High Rise highlighting the coverage and smooth fit

Ashley has 39” hips and wears KNIX S

Full-body view of model wearing the SuperPlus Leakproof® No-Show High Rise highlighting the coverage and smooth fit

Ashley has 39” hips and wears KNIX S

On image text: Ultra-thin, front-to-back liner. Bonded edges prevent side leaks.

Ashley has 39” hips and wears KNIX S

Color: Black

Size:

Taille conforme

•

Size:

Size and Fit Guide

Les sous-vêtements antifuites sont exempts de taxe de vente au Canada*

Créez votre lot de 3

Front view of model wearing the SuperPlus Leakproof® No-Show High Rise highlighting the coverage and smooth fit

SuperPlus Anti-Fuite® Taille Haute Invisible

Color: Black

Size:

Size:

Front view of model wearing the SuperPlus Leakproof® No-Show High Rise highlighting the coverage and smooth fit

SuperPlus Anti-Fuite® Taille Haute Invisible

Color: Black

Size:

Size:

Front view of model wearing the SuperPlus Leakproof® No-Show High Rise highlighting the coverage and smooth fit

SuperPlus Anti-Fuite® Taille Haute Invisible

Color: Black

Size:

Size:

Livraison gratuite pour les commandes de 100 $ et plus

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 $125* CAD = Free Shipping (2-6 business days)

Orders under $125* 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.

Première paire sans risque pendant 30 jours

Leakproof Underwear, Risk Free

Returns & Exchanges

Holiday Return Policy
Eligible items purchased online or in stores between November 2, 2026 and December 31, 2026 may be returned through January 29, 2027. All other purchases fall under our 30 day Returns Policy.

Standard Return Policy
New to leakproof? Your first pair is risk free for 30 days. Wear them, wash them, and see how they work for your body. Not right for you? We'll refund the item price (original shipping excluded). Prefer a different size or style? We also offer free exchanges. Just email info@knix.com and we'll take care of you.

Purchased leakproof before? Within 30 days of delivery you can exchange for another size, style, or store credit. We're unable to provide refunds on underwear. If you ordered multiple pairs, please open, wash, and wear one pair only before initiating an exchange.

Still have questions? View our full policy here.

Rewards Members Earn 39 Points

Product Description

Total peace of mind with a supportive, no-show fit. Whether you are managing an ultra-heavy period, postpartum recovery, or intense bladder leaks, the SuperPlus No-Show High Rise is engineered to keep you dry. The moisture-wicking and anti-odor fabric pulls liquid away from the body instantly, offering an alternative to bulky pads. Designed for a "barely there" feel, these high-rise panties stay in place without digging or rolling, providing all-day comfort for even the most active schedules.

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 | Front view of model wearing the SuperPlus Leakproof® No-Show High Rise highlighting the coverage and smooth fit | Black
Ashley has 39” hips and wears KNIX S | Back view of model wearing the SuperPlus Leakproof® No-Show High Rise highlighting the coverage and smooth fit | Black
Ashley has 39” hips and wears KNIX S | Full-body view of model wearing the SuperPlus Leakproof® No-Show High Rise highlighting the coverage and smooth fit | Black

Comment choisir ?

Essential

  • • Days you don’t need leak protection. Everyday freshness and moisture wicking.
  • tsp
    0 tsp

Heavy

  • • Extra peace of mind. For the first days of your cycle, light bladder leaks, or a full night's sleep without a leak.
  • 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

  • • Daily freshness. For sweat, discharge, period spotting, or backup protection.
  • tsp
    about 1-3 tsp
  • pad
    about 1-3 pantyliners
  • tampon
    about 1-3 regular tampons
  • cup
    about 0.5 menstrual cups

Moderate

  • • For mid-cycle flow, surprise cough or sneeze leaks, or a really sweaty spin class.
  • 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

  • • Ultimate peace of mind. For the heaviest period days, light bladder leaks, unexpected postpartum flow, or overnight protection.
  • 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
TECHNOLOGIE ÉTANCHE BREVETÉE

Notre protège-slip le plus long et le plus absorbant—jamais.

Notre technologie Fresh Fix Technology® originale intègre une doublure absorbante qui retient l’équivalent d’environ 7 à 11 super tampons, vous permettant de rester fraîche, à l’aise et de garder le contrôle.

Soft Top Layer

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

What Our Customers Are Saying

4.2
Rated 4.2 out of 5 stars
Based on 371 reviews
Reviews Summary
Customers say these underwear are comfortable and provide reliable protection. Many praise the full front and back coverage, with frequent comments highlighting their effectiveness for overnight wear and heavy flow. Users appreciate the no-show design under clothing and soft fabric. Common concerns include fit issues around the thigh and leg openings, with some noting the underwear rides up or gaps. A few mention the material feels thicker than expected, and some report leakage despite the protective design. Overall, customers find them a practical alternative to traditional products.
77%would recommend these products
ComfortRated 4.2 on a scale of 1 to 5
EffectivenessRated 4.2 on a scale of 1 to 5
FitRated 0.0 on a scale of minus 2 to 2
Keywords
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Rating
Ratings
Height
Height
How do you use your Leakproof?
How do you use your Leakproof?
Usual Pant Size
Usual Pant Size
371 reviews
  • Rated 5 out of 5 stars
    2 days ago
    Get these! Worth the price!

    These are by far the best period underwear I’ve ever worn. Haven’t leaked yet and are as comfortable as regular underwear of the same cut.

    AM
    Amanda M.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    4 days ago
    Knix never disappoints

    This us my second Knix order, a few tears apart, and their product has only improved over time. True to size and work as promised. Try them and you will be glad you dud.

    ED
    Elizabeth D.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    4 days ago
    Super Plus

    Love them they are so comfortable!! So nice not to wear pads

    SS
    Sharon S.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise Black / XL
  • Rated 5 out of 5 stars
    6 days ago
    Doesn't stink

    Holds liquid for 12 hours no odor

    RP
    Rhiannon P.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    1 week ago
    First order

    This is the second brand of leak proof undies I have tried and could immediately tell a difference. Love the fit and they work perfectly! Will be ordering additional pairs!

    RD
    Rebecca D.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    1 week ago
    Super plus Leakproof no show high rise

    Let’s just say I can’t live without them! I have an undiagnosed medical condition and I have to wear them everyday…..just in case!

    SS
    Sari S.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise Velaris Night Sky / L
  • Rated 5 out of 5 stars
    1 week ago
    5 Stars

    Colour,fit and comfort

    M
    MaryAnn
    Reviewing
    SuperPlus Leakproof® No-Show High Rise Dark Cherry / XXXL
  • Rated 5 out of 5 stars
    1 week ago
    5 Stars

    I like the feel of material and the fit. Colours are great. Very comfortable

    M
    MaryAnn
    Reviewing
    SuperPlus Leakproof® No-Show High Rise Twilight Navy / XXXL
  • Rated 5 out of 5 stars
    1 week ago
    Bladder leaks contained

    I've tried several brands, that leak right through. So far these haven't. There seems to be more than one layer in them.

    Sometimes I have quite a bit leakage, that spill over the sanitary pad. So I'm pleased these have not . It does say not to Wash in hot and use hot dryer, use cold water, . Then air dry. (For longer life)? I use very short coolest temp in dryer. Ide but more but cost is a factor. They are very comfortable too.

    CK
    chiffon K.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    1 week ago
    Effective

    I only have 2 pair and they are working great

    AB
    Ann B.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise Warm Sand / L
  • Rated 5 out of 5 stars
    1 week ago
    Absorbent and Leak-proof

    Very absorbent.. I have full bladder incontinence and these keep my pants and myself feeling dry.

    LD
    Liliana D.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise Dark Cherry / XXL
  • Rated 5 out of 5 stars
    2 weeks ago
    Great for my mother!

    Bought based on suggestion from our homecare aide for my elderly mother. Great comfort & pleasant wear.

    BF
    Bernard F. K.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise

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