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Home / High Rise Underwear / SuperPlus Leakproof® No-Show High Rise
Best Seller

SuperPlus Leakproof® No-Show High Rise

$39.00 CAD

Buy 3+ Save 15%, Buy 5+ Save 20%

Absorbs 7-11 super tampons

Front-to-back liner

Bonded seams prevent leaks

Machine washable

Ashley has 39” hips and wears KNIX S

Ashley has 39” hips and wears KNIX S

Ashley has 39” hips and wears KNIX S

Ashley has 39” hips and wears KNIX S

Absorbency: Ultra

Ultra
about 7-11 super tampons
Essential
No Absorbency
Moderate
about 2-4 super tampons
Light
about 1-3 regular tampons
Heavy
about 4-7 super tampons

Color: Twilight Navy

Size:

True to Size

•

Size:

Size and Fit Guide

Leakproof Underwear is Sales Tax Free in Canada*

Build Your 3-Pack

SuperPlus Leakproof® No-Show High Rise

Color: Twilight Navy

Size:

Size:

SuperPlus Leakproof® No-Show High Rise

Color: Twilight Navy

Size:

Size:

SuperPlus Leakproof® No-Show High Rise

Color: Twilight Navy

Size:

Size:

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.
First Pair Risk Free for 30 Days

Leakproof Underwear, Risk Free

Returns & Exchanges

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 | Twilight Navy
| Twilight Navy
Ashley has 39” hips and wears KNIX S | Twilight Navy
Ashley has 39” hips and wears KNIX S | Twilight Navy
| General

How to Choose?

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

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Color: Warm Sand

+3
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

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

How to wash

Knix underwear is 100% reusable and machine washable, just like your regular undies. 

  • Rinse

    • Not required. But for best results, you can rinse your leakproof with cold water in the tub or sink before washing.

  • Wash

    • Machine wash on a cold, gentle cycle with mild detergent.

  • Dry

    • For their longest life, air drying is best. Hang or lay flat to dry.

  • Avoid

    • Fabric softeners, bleach, ironing, or heat from the dryer.

    4.2
    Rated 4.2 out of 5 stars
    Based on 278 reviews
    Total 5 star reviews: 185 Total 4 star reviews: 24 Total 3 star reviews: 25 Total 2 star reviews: 18 Total 1 star reviews: 26
    Reviews Summary
    Customers say these high-rise underwear provide excellent protection for bladder leaks and heavy periods, with many praising their comfort and confidence-boosting qualities. Users appreciate the extended coverage from front to back and find them effective for overnight use. The fit receives mixed feedback - while many love the high-rise design and soft fabric, some report issues with slipping, rolling down, or loose leg openings. Several customers mention sizing challenges, noting they run small or have inconsistent fit compared to other styles. Common concerns include the material feeling slippery under clothing and some experiencing leakage despite the heavy-duty protection claims. Many find them bulkier than expected but appreciate the no-show design under most clothing.
    75%would recommend this product
    ComfortRated 4.1 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
    Search
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    278 reviews
    • Rated 5 out of 5 stars
      3 days ago
      5 Stars

      Very comforting and reliable.

      Melanie-Ann
      Was this helpful?
    • Rated 5 out of 5 stars
      3 days ago
      5 Stars

      Very comfortable and relaible.

      Melanie-Ann
      Was this helpful?
    • Rated 5 out of 5 stars
      3 days ago
      5 Stars

      Vety comfortable and reliable.

      Melanie-Ann
      Was this helpful?
    • Rated 5 out of 5 stars
      6 days ago
      Saved me and my sheets

      I've seen these floating around the internet for some time and finally decided to take the monetary plunge to try them out. I love them! They're soft and comfortable. Not sweat-inducing. The coverage is incredible and has literally saved me and my sheets this month. They're quite absorbent and seem to work best on their own without any help from a pad which can get in the way and redirect your Flo outside of where it should go. I highly recommend!

      Melissa F.
      Verified Buyer
      Was this helpful?
    • Rated 5 out of 5 stars
      6 days ago
      Must have

      Great fit, great material & love them!

      Robyn J.
      Verified Buyer
      Was this helpful?
    • Rated 5 out of 5 stars
      1 week ago
      New style

      The panties are great. Have several of the older leakproof panties and when the new ones came out I wanted to give them a try. Not disappointed at all.

      Margaret S.
      Verified Buyer
      Was this helpful?
    • Rated 5 out of 5 stars
      1 week ago
      5 Stars

      Great fit and fabric plus great protection. I like the fact that they don’t show panty lines

      Maria
      Was this helpful?
    • Rated 5 out of 5 stars
      1 week ago
      5 Stars

      Looks very absorbant

      Michael E.
      Was this helpful?
    • Rated 5 out of 5 stars
      1 week ago
      5 Stars

      Color is nice

      Michael E.
      Was this helpful?
    • Rated 5 out of 5 stars
      1 week ago
      5 Stars

      Price was good

      Michael E.
      Was this helpful?
    • Rated 5 out of 5 stars
      2 weeks ago
      5 Stars

      Perfect fit

      Ashtyn
      Was this helpful?
    • Rated 5 out of 5 stars
      3 weeks ago
      Where have these been all of my adult life??

      At 50, leaks have ruined more clothes, chairs and mattresses in my lifetime than I care to remember! I really wish products like this existed 30 years ago! Cute styles and colors to chose from. And now bras and swimwear, too?! Knix is my go to from now on! Thank you to whoever invented this!

      Kim C.
      Verified Buyer
      Was this helpful?

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