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SuperPlus Leakproof® No-Show High Rise

$39.00 CAD

Absorbs 7-11 super tampons

Front-to-back liner

Bonded seams prevent leaks

Machine washable

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

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

Color: Black

Size:

True to Size

Size:

Size and Fit Guide

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

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

★★★★★ Everyone's switching to Knix Leakproof

151K SuperPlus pairs sold. And counting...

Shop Now
★★★★★ I don't worry about leakage with these - they are GREAT!!!

— Carol F.

★★★★★ This product has absolutely changed the game when it comes to period products..I am SO happy I made the switch. Comfortable, extremely absorbent..

— Mariah S.

★★★★★ Would totally recommend these. They fit well and do their job on heavy days. A must have.

— Jennifer N.

DAY & NIGHT COMFORT

SuperPlus Leakproof® High Rise

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

GET THEM BEFORE THEY'RE GONE

Not sure which absorbency is right for you?

4.2
Rated 4.2 out of 5 stars
Based on 296 reviews
Total 5 star reviews: 197
Total 4 star reviews: 26
Total 3 star reviews: 28
Total 2 star reviews: 19
Total 1 star reviews: 26
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.
75%would recommend these products
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Ratings
296 reviews
  • Rated 5 out of 5 stars
    4 minutes ago
    Great product

    Works great!

    AJ
    Alexis J.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    2 days ago
    Says it all!!

    Perfect

    DC
    Donna C.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise Warm Sand / M
  • Rated 5 out of 5 stars
    2 days ago
    Wish I would have had these over the last 20 years!!!!

    These superplus leakproof underwear are exactly what I have been needing! I have PCOS and I have a super heavy flow that requires overnight pads through out my cycle. They are very effective and do not leak. I can wear a pair to bed all night and no leaks at all. Overall, they are great for protection and comfort.

    B
    Bridgett
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    4 days ago
    Surprised!

    I didn’t know what to expect, but it works! I feel comfortable and confident during my most vulnerable week. Definitely buying more

    ES
    Emily S.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    1 week ago
    Overnight Peace of Mind 💖

    I initially tried out the original leak proof underwear but was a little worried about leaking in the front area overnight because I'm often a tummy sleeper when crampy. Once I saw these I grabbed enough to last me for the week and switched all my other underwear over to the everyday wear. So comfy!

    JS Profile picture for Jenna S.google logo
    Jenna S.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise Twilight Navy / L
  • Rated 5 out of 5 stars
    2 weeks ago
    absolutely perfect

    Love, love, love, LOVE Knix!

    I have asthma, and during coughing fits I was dealing with bladder leaks that made me feel so self-conscious. Since switching to Knix, it’s been so much more manageable. They make me feel secure, comfortable, and confident enough to go about my day without constantly worrying.

    I honestly can’t stop buying more because they’re just that good. They’re comfortable, well-made, and actually do what they promise. If you’re on the fence, I’d absolutely recommend giving them a try!

    DB
    dhRuvi b.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise Black / L
  • Rated 5 out of 5 stars
    2 weeks ago
    Grea

    Great

    LA
    Liana A.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise Dark Cherry / S
  • Rated 5 out of 5 stars
    2 weeks ago
    very comfortable

    much nicer will full pad

    DC
    DON C.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise Warm Sand / M
  • Rated 5 out of 5 stars
    2 weeks ago
    amazing

    wore them all day with no leakage coming from a heavy flow girl. so obsessed

    EV
    Emmi v. Z.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    3 weeks ago
    Love the full coverage

    Very comfortable. Would buy again

    JM
    Jennifer M.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    3 weeks ago
    Perfect

    These panties are so grea! They have been the answer to sleepless nights. For the first time in over a year I haven’t had to wear a pad that rolls up and sticks to your skin. I have had urinary incontinance since a medical emergency over a year ago in which I lost a lot of functions including the ability to move fast and recognize cues from my body I never thought about before. I can sleep through the night without changing my clothes or my sheets and I can go out in public without looking for the bathrooms first thing. I would 100% recommend these to everyone. That struggles with incontinance or an extra heavy menstrual flow they are a life saver and a money saver.

    CW
    Christine W.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise
  • Rated 5 out of 5 stars
    3 weeks ago
    very absorbent

    The absolute best incontinence underwear I have tried!

    AE
    Anne E.
    Verified Buyer
    Reviewing
    SuperPlus Leakproof® No-Show High Rise

Your underwear questions, answered.

151K+ made the switch