Skip to content

Sale Ending Soon! Your Bag

Your cart is empty

But you're full of potential..

Up to 40% off Anniversary Sale! Shop Now

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

Leakproof Swim Short

$39.00 CAD

$65.00

40% off

Absorbs about 2 super tampons

Mid-rise fit

Full coverage

Premium UPF 50+ fabric

Machine washable

| Black
| Black
| Black
| General
| Black

Color: Black

Size:

True to Size

Size:

Size and Fit Guide

Spend $100, get Free Priority Fulfillment

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 Returns within 30 Days

Clothing & Swim

Returns & Exchanges

Leggings, sweats, t-shirts, sleepwear, and swim items are eligible for return or exchange within 30 days of delivery with tags attached. Swim bottoms and pieces must have the original sanitary strip intact.

Still have questions? View our full policy here.

Rewards Members Earn 39 Points

"These bestselling leakproof swim shorts fit the bill, providing mid-rise, full-butt coverage."

- HuffPost

Swim in Style

A comfy, sporty cut with full bum coverage.

Shine Bright Poolside

Limited edition shimmer fabric that catches the light just right.

Worry-Free Protection

Discreet, built-in protection that absorbs about 1 regular tampon worth of liquid.

Sun-Smart Protection

UPF 50+ fabric protects your skin while you soak up the sun.

Zoom

| Black
| Black
| Black
| General
| 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

Leakproof swim works in layers

The 3-layer liner absorbs and locks in leaks, whether you're in or out of the water. When washed with detergent, blood releases through the top layer for a fresh, clean suit.

Top Layer

A silky-smooth top layer that feels just like a regular swimsuit.

4.5
Rated 4.5 out of 5 stars
Based on 217 reviews
Total 5 star reviews: 154 Total 4 star reviews: 33 Total 3 star reviews: 13 Total 2 star reviews: 9 Total 1 star reviews: 8
89%would recommend these products
ComfortRated 4.2 on a scale of 1 to 5
FitRated -0.2 on a scale of minus 2 to 2
EffectivenessRated 4.2 on a scale of 1 to 5
217 reviews
  • Rated 5 out of 5 stars
    3 minutes ago
    Perfect fit

    Great swim bottoms for those a little shy :)

    khristine l.
    Verified Buyer
    Reviewing
    Leakproof Swim Short
  • Rated 5 out of 5 stars
    4 weeks ago
    Love!

    I'm an active mom with 5 year old twins and I am obsessed with these shorts! I love that I can run, bend, swim and just generally play with the kids without constantly adjusting my bottoms. Highly recommend! Knix, please make these in more colour-ways!

    I ordered a size small, about 5'5" and 125lbs for reference. They ride up slightly in the thighs on me :)

    Ashley G.
    Verified Reviewer
    Reviewing
    Leakproof Swim Short
  • Rated 5 out of 5 stars
    1 month ago
    So

    I am weeks a way from swimming and have lost some weight about (10 to 12 lbs)I hesitate to order below XL because it could assume too much more movement and the years and weather effect any loss being permanent.

    Brenda M.
    Verified Buyer
    Reviewing
    Leakproof Sculpt Swim Short
  • Rated 5 out of 5 stars
    2 months ago
    5 Stars

    loving my items. Comfortable

    Cheryl
    Reviewing
    Leakproof Swim Short
  • Rated 5 out of 5 stars
    2 months ago
    5 Stars

    So far so good with these swim shorts! I love that i don't have to say no to the pool anymore!

    Priyanka
    Reviewing
    Leakproof Swim Short
  • Rated 5 out of 5 stars
    3 months ago
    5 Stars

    Pwrfect for beach days as well as impromptu swims !!

    Sarah
    Reviewing
    Leakproof Swim Short
  • Rated 5 out of 5 stars
    4 months ago
    Leakproof swim shorts

    The new underwear is great. I love them!

    Pat D.
    Verified Buyer
    Reviewing
    Leakproof Swim Short
  • Rated 5 out of 5 stars
    5 months ago
    5 Stars

    The swim shorts fit really well. I cant wait to try them out!

    Candace
    Reviewing
    Leakproof Swim Short
  • Rated 5 out of 5 stars
    5 months ago
    Best swim protection while on period

    This is our second pair I purchased for my daughter. It gives her confidence and let's her to continue to enjoy swimming.

    Lynn Z.
    Verified Buyer
    Reviewing
    Leakproof Swim Short
  • Rated 5 out of 5 stars
    8 months ago
    comfortable

    Nice fitting

    Holly C.
    Verified Buyer
    Reviewing
    Leakproof Swim Short
  • Rated 5 out of 5 stars
    8 months ago
    Super swim short!

    The leakproof swim shorts are very comfortable and fit very well. It is very reassuring to know that accidents won’t happen while at the pool!

    Kathleen S.
    Verified Buyer
    Reviewing
    Leakproof Sculpt Swim Short
  • Rated 5 out of 5 stars
    8 months ago
    It was amazing comfy

    It was much better

    Mckenzie F.
    Verified Buyer
    Reviewing
    Leakproof Sculpt Swim Short

Your swimwear questions, answered.