Skip to content Accessibility Statement

Shop by Style

More Ways to Shop

Leakproof Quiz
Why Knix Leakproof Works

Bras

Bra Quiz
Bra Bundles

Swim

Swim
New Mini Dream Boxer
Bra Bundles

Your Bag

Your cart is empty

But you're full of potential..

🍦Move to the front of the line — spend $100 to unlock FREE priority fulfillment!

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

Suggestions

Top Sale Picks

Revolution V-Neck Bra - Last Call

$47.60 CAD
$68.00
30-55% off

Color: Indigo Limited Edition

+34

Super Leakproof® Dream Short™ - Original - Last Call

$31.50 CAD
$42.00
25% off

Color: Meadows Limited Edition

+13

Day & Night Mystery 2-Pack

From 
$36.00 CAD
$74.00
Save $38

Good to Go Seamless Bra

$29.00 CAD
$48.00
39% off

Color: Warm Sand

Home / All Leakproof

Shop All Leakproof

Designed for everyday comfort and protection, we’ve got you covered in our best-selling leakproof underwear, shapewear, activewear, swimwear and more.

Leakproof Underwear
Leakproof Swim
Leakproof Shapewear
Leakproof Leggings & Shorts
Leakproof Underwear Kits & Packs

Filters

Clear All

Leakproof Underwear

From ultra-soft fabrics and seamless styles to super absorbent underwear, you’re covered 24/7/365.

Super Leakproof® Dream Boxer™

$48.00 CAD
Buy More, Save More

Color: Fuchsia Gingham Limited Edition

+2

Super Leakproof® Dream Short™

$42.00 CAD
Buy More, Save More

Color: Cheetah Print Limited Edition

+2

SuperPlus Leakproof® No-Show High Rise

$39.00 CAD
Buy More, Save More

Color: Twilight Navy

SuperPlus Leakproof® No-Show Bikini

$36.00 CAD
Buy More, Save More

Color: Twilight Navy

SuperPlus Leakproof® No-Show Boybrief

$39.00 CAD
Buy More, Save More

Color: Dark Cherry

Super Leakproof® No-Show High Rise

$36.00 CAD
Buy More, Save More

Color: Cheetah Print Limited Edition

+2

Super Leakproof® No-Show Bikini

$32.00 CAD
Buy More, Save More

Color: Cheetah Print Limited Edition

+2

Super Leakproof® No-Show Boyshort

$32.00 CAD
Buy More, Save More

Color: Cheetah Print Limited Edition

+2

Super Leakproof® No-Show French Cut

$32.00 CAD
Buy More, Save More

Color: Cheetah Print Limited Edition

+2

Super Leakproof® No-Show Thong

$32.00 CAD
Buy More, Save More

Color: Twilight Navy

+2

Super Leakproof® Cotton Boxer Brief

$42.00 CAD
Buy More, Save More

Color: Lavender Limited Edition

+1

Super Leakproof® Cotton Boybrief

$36.00 CAD
Buy More, Save More

Color: Twilight Navy

+1

Super Leakproof® Cotton High Rise

$36.00 CAD
Buy More, Save More

Color: Dusty Pink Limited Edition

+1

Super Leakproof® Cotton Bikini

$32.00 CAD
Buy More, Save More

Color: Pepper

+1

Leakproof UltraThin No-Show High Rise

$32.00 CAD
Buy More, Save More

Color: Cheetah Print Limited Edition

+2

Leakproof UltraThin No-Show Bikini

$27.00 CAD
Buy More, Save More

Color: Cheetah Print Limited Edition

+3

Leakproof UltraThin No-Show French Cut

$27.00 CAD
Buy More, Save More

Color: Cheetah Print Limited Edition

Leakproof UltraThin No-Show Boybrief

$34.00 CAD
Buy More, Save More

Color: Black

Light Leakproof UltraThin No-Show Thong

$27.00 CAD
Buy More, Save More

Color: Black

+3

Light Leakproof No-Show High Rise

$29.00 CAD
Buy More, Save More

Color: Warm Sand

+2

Light Leakproof No-Show Bikini

$25.00 CAD
Buy More, Save More

Color: Rose Water

+3

Light Leakproof No-Show French Cut

$25.00 CAD
Buy More, Save More

Color: Black

Light Leakproof No-Show Boyshort

$25.00 CAD
Buy More, Save More

Color: Warm Sand

Light Leakproof No-Show Thong

$25.00 CAD
Buy More, Save More

Color: Black

Light Leakproof No-Show High Rise Thong

$25.00 CAD
Buy More, Save More

Color: Black

Leakproof CoreLove High Rise

$38.00 CAD
Buy More, Save More

Color: Black

Leakproof Swim

Picture perfect suits that don’t sacrifice comfort for style, available in more cuts and colors than ever before.

Leakproof Sculpt Classic One Piece Swimsuit

$101.25 CAD
$135.00
25% off

Color: Lotus Limited Edition

+1

Leakproof Sculpt Deep V One Piece Swimsuit

$101.25 CAD
$135.00
25% off

Color: Jasmine Dusk Limited Edition

Leakproof Bikini Swim Bottom

$45.00 CAD
$60.00
25% off

Color: Black

Leakproof Sculpt Swim Short

$52.50 CAD
$70.00
25% off

Color: Espresso Limited Edition

+1

Leakproof Sculpt Bikini Swim Bottom

$48.75 CAD
$65.00
25% off

Color: Jasmine Dusk Limited Edition

Leakproof Classic One Piece Swimsuit

$93.75 CAD
$125.00
25% off

Color: Black

Leakproof Sculpt Deep V Swim Dress

$116.25 CAD
$155.00
25% off

Color: Deep Orchid Limited Edition

Leakproof Sculpt High Rise Bikini Swim Bottom

$48.75 CAD
$65.00
25% off

Color: Deep Orchid Limited Edition

Leakproof Sculpt High Cut Bikini Swim Bottom

$48.75 CAD
$65.00
25% off

Color: Espresso Limited Edition

Leakproof Deep V One Piece Swimsuit

$93.75 CAD
$125.00
25% off

Color: Black

Leakproof Swim Short

$48.75 CAD
$65.00
25% off

Color: Black

Leakproof Seersucker Sculpt Deep V One Piece Swimsuit

$103.50 CAD
$138.00
25% off

Color: Navy Seersucker Limited Edition

Leakproof Classic One Piece Swimsuit - Long Torso

$93.75 CAD
$125.00
25% off

Color: Black

Leakproof Deep V One Piece Swimsuit - Long Torso

$93.75 CAD
$125.00
25% off

Color: Black

Leakproof High Rise Bikini Bottom

$45.00 CAD
$60.00
25% off

Color: Black

Leakproof Swim Skirt

$48.75 CAD
$65.00
25% off

Color: Black

Leakproof Cap-Sleeve One Piece Swimsuit - Color Block

$101.25 CAD
$135.00
25% off

Color: Black/White Limited Edition

Leakproof High Rise Bikini Swim Bottom - Color Block

$48.75 CAD
$65.00
25% off

Color: Black/White Limited Edition

Leakproof Sculpt Long Swim Short

$52.50 CAD
$70.00
25% off

Color: Black

Leakproof Shapewear

Go commando in shapewear on your period thanks to a built-in liner, all while targeted support zones offer comfortable smoothing and shaping.

Leakproof High Rise Shaper Brief - Original

$40.60 CAD
$58.00
30% off

Color: Warm Sand

Shaper High Rise Leakproof Briefs

$40.60 CAD
$58.00
30% off

Color: Warm Sand

Customizable Shaper High Rise Leakproof Shorts

$47.60 CAD
$68.00
30% off

Color: Sola

Leakproof Contour Thigh Saver® 6”

$25.00 CAD
$49.00
48% off

Color: Warm Sand

Leakproof Thigh Saver® 6”

$25.00 CAD
$44.00
43% off

Color: Warm Sand

+3

Leakproof Thigh Saver® 10”

$25.00 CAD
$49.00
48% off

Color: Warm Sand

Leakproof Leggings & Shorts

Get ready to experience amazing leggings, shorts, and more with built-in incognito protection, so you can move freely without worrying about period, bladder, and sweat leaks.

LeakStrong™ Leakproof Legging

$45.00 CAD
$90.00
50% off

Color: Black

LeakStrong™ Leakproof Short

$45.00 CAD
$90.00
50% off

Color: Titanium Limited Edition

LeakStrong™ Leakproof Short - Original

$45.00 CAD
$90.00
50% off

Color: Black

LeakStrong™ Leakproof Skort

$42.50 CAD
$85.00
50% off

Color: Black

Crosscourt Dress

$55.00 CAD
$110.00
50% off

Color: White

Crosscourt Pleated Skort

$42.50 CAD
$85.00
50% off

Color: Black

Pursuit Leakproof Training Short

$37.50 CAD
$75.00
50% off

Color: Black

Leakproof Underwear Kits & Packs

Super Leakproof® Dream Team 2-Pack

From 
$75.00 CAD
$90.00
Save $15

The Full Cycle Kit - Bikini

From 
$122.00 CAD
$153.00
Save $31

The Full Cycle Kit - High Rise

From 
$136.00 CAD
$171.00
Save $35

Fierce & Free Leakproof 3-Pack

From 
$93.00 CAD
$110.00
Save $18

Super Leakproof® Sleep Easy Set

From 
$75.00 CAD
$90.00
Save $15

24/7 Leakproof Kit - Bikini

From 
$115.00 CAD
$138.00
Save $23

24/7 Leakproof Kit - High Rise

From 
$124.00 CAD
$148.00
Save $24

Super Leakproof® Dream Short™ 2-Pack

From 
$70.00 CAD
$84.00
Save $14

The Heavy Flow Kit - Bikini

From 
$135.00 CAD
$170.00
Save $35

The Heavy Flow Kit - High Rise

From 
$148.00 CAD
$186.00
Save $38

Super Leakproof® Dream Boxer™ 2-Pack

From 
$80.00 CAD
$96.00
Save $16

Leakproof Mini Boxer PJ Set

From 
$82.00 CAD
$96.00
Save $14

Leakproof PJ Set

From 
$70.00 CAD
$83.00
Save $13

Leakproof UltraThin No-Show Bikini 3-Pack

$68.00 CAD
$81.00
Save $13

Color: Eucalyptus/Rose Quartz/Rosewood Limited Edition

Super Leakproof® No-Show High Rise 3-Pack

$75.00 CAD
$108.00
Save $33

Color: Berry/Violet/Lavender Limited Edition

Light Leakproof No-Show Bikini 3-Pack

$60.00 CAD
$75.00
Save $15

Color: Zebra/Cobalt/Warm Sand Limited Edition

Super Leakproof® No-Show Bikini 3-Pack

$75.00 CAD
$96.00
Save $21

Color: Berry/Violet/Lavender Limited Edition

Leakproof UltraThin No-Show High Rise 3-Pack

$75.00 CAD
$96.00
Save $21

Color: Eucalyptus/Rose Quartz/Rosewood Limited Edition

Light Leakproof No-Show Thong 3-Pack

$60.00 CAD
$75.00
Save $15

Color: Zebra/Cobalt/Warm Sand Limited Edition

Shop by Category

Bras

Leakproof Underwear

| White with Black Polka Dot

Sleep

New Arrivals

Best Sellers

Apparel

Active

Shapewear

Mens

| Pink Stripe

Teen