Skip to content Accessibility Statement

Your Bag

Your cart is empty

But you're full of potential..

Create an account to join Club Knix and earn points on this order

Leakproof UltraThin No-Show High Rise

$32.00 CAD

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

Absorbs about 2.5 super tampons

Invisible under clothes

Moderate protection without the bulk

Machine washable

Color: Blue Serpent Limited Edition

Size:

True to Size

Size:

Size and Fit Guide

Size XS fits hips 30

Size XS

fits hips 30"-33"

Size S fits hips 34

Size S

fits hips 34"-37"

Size M fits hips 38

Size M

fits hips 38"-41"

Size XL fits hips 45

Size XL

fits hips 45"-47"

Size XXL fits hips 48

Size XXL

fits hips 48"-50"

Leakproof Underwear is Sales Tax Free in Canada*

Build Your 3-Pack

Leakproof UltraThin No-Show High Rise

Color: Blue Serpent Limited Edition

Size:

Size:

Leakproof UltraThin No-Show High Rise

Color: Blue Serpent Limited Edition

Size:

Size:

Leakproof UltraThin No-Show High Rise

Color: Blue Serpent Limited Edition

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 32 Points

“Best seamless absorbent underwear"

- Women's Health

Product Description

These underwear feature our buttery soft fabric and offer a full bum and hip coverage, sitting near your belly button. Great for leak protection, the ultra-thin liner absorbs about the same as 2.5 super tampons or 1 regular pad’s worth. Get the protection you want from periods and light bladder leaks while feeling comfortable and worry-free.

High Rise Silhouette

Sits just about the natural waist. Full coverage through the stomach, hip, and bum.

Moderate Absorbency

Absorbs 2.5 super tampons worth of liquid—perfect for moderate flow days, light bladder leaks, and sweat. The carbon cotton gusset top layer keeps you dry.

Worry-Free Protection

Perfect for moderate period days, light bladder leaks, and sweat. Moisture-wicking liner keeps you dry and comfortable.

No-Show Style

Buttery-soft and smooth fabric gives a seamless look and feel. Disappears under clothes, even leggings.

Easy to Wash

Machine washable, just like your regular underwear.

Zoom

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
FRESH FIX TECHNOLOGY®

Built-in protection that feels like nothing at all.

Our patented 360 LeakSeal™ technology locks in leaks at every edge. The ultra-thin liner absorbs about 2.5 super tampons worth of liquid.

Soft Top Layer

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

4.5
Rated 4.5 out of 5 stars
Based on 1,407 reviews
Total 5 star reviews: 1.1k Total 4 star reviews: 139 Total 3 star reviews: 83 Total 2 star reviews: 39 Total 1 star reviews: 83
Reviews Summary
Customers say these high-rise underwear are extremely comfortable and feel like wearing nothing at all. They appreciate the soft, silky fabric and the confidence they provide for bladder leaks and light incontinence. Many find them perfect for workouts, with no panty lines and excellent all-day protection. Users consistently mention the comfortable fit and reliable leak protection. However, some note sizing inconsistencies between colors and styles, with several finding them smaller than expected. A few customers mention the waistband sits very high, which some love for today's fashion while others find it too high. Common feedback includes concerns about the protective pad placement and occasional fit issues around the legs.
86%would recommend these products
ComfortRated 4.5 on a scale of 1 to 5
EffectivenessRated 4.5 on a scale of 1 to 5
FitRated -0.0 on a scale of minus 2 to 2
Keywords
Keywords
Rating
Ratings
Height
Height
Usual Pant Size
Usual Pant Size
1,407 reviews
  • Rated 5 out of 5 stars
    4 minutes ago
    5 Stars

    Great fit, beautiful colours!

    Sharon
    Leakproof UltraThin No-Show High Rise - Last Call
  • Rated 5 out of 5 stars
    5 hours ago
    Happy customer

    Wonderful purchase!

    Adelaide H.
    Verified Buyer
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    3 days ago
    5 Stars

    Amazing Quality

    Aamir
    Leakproof UltraThin No-Show High Rise 3-Pack - Last Call
  • Rated 5 out of 5 stars
    4 days ago
    Wonderful fit. I’ve been wearing these leg proof for three years. There’s nothing greater.!

    Comfortable to wear does not show any lines.. Washes well and wears a long time.

    JENNIFER B.
    Verified Buyer
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    5 days ago
    5 Stars

    Every pair is more comfortable then the last

    Ryanne
    Leakproof UltraThin No-Show High Rise - Last Call
  • Rated 5 out of 5 stars
    5 days ago
    Love them

    Extremely comfortable and effective, and I love the silky feel.

    Janice B.
    Verified Buyer
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    6 days ago
    Ultra thin 3***

    Love my new undies!! So comfortable under my clothes.

    Debbie W.
    Verified Buyer
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    1 week ago
    High rise

    I’m really happy with them. Wish I heard about them along time ago. Will probably buy more down the road. I really like the pj’s bottoms that I got.

    Tnx. Gail

    Gail J.
    Verified Buyer
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    1 week ago
    Indrrwear

    Comfortable

    Denise m.
    Verified Buyer
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    1 week ago
    Beautiful fit!

    Very comfortable and reassuring!

    Linda P.
    Verified Buyer
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    1 week ago
    Great Undies!

    These panties are so smooth and comfortable that I really can’t tell that they are also leakproof… until I sneeze or cough and realize that I don’t need to worry about an embarassing leak!

    Laura V. M.
    Verified Buyer
    Leakproof UltraThin No-Show High Rise
  • Rated 5 out of 5 stars
    1 week ago
    Leakproof Review

    Super comfortable fit.

    Jane L.
    Verified Buyer
    Leakproof UltraThin No-Show High Rise - Last Call

Your underwear questions, answered.