Really, it’s just better underwear

Comfortable, convenient, and confident. Discover why you’ll love Knix Leakproof Underwear.

So you feel fresh and in-control.

Built-in protection that feels like nothing at all:

① Soft top layer removes moisture & fights odor

② Middle layer absorbs liquid quickly

③ Leakproof layer keeps blood, sweat and pee from leaking through

Leakproof Absorbency Guide

Good for

extra heavy period days, overnight protection, light bladder leaks

Absorbs

~3.5-4.5 regular pads, ~7-9 super tampons, ~2-3 menstrual cups

Good for

heavy period days, overnight protection, light bladder leaks

Absorbs

~1.5-3 regular pads, ~3-6 super tampons, ~1-2 menstrual cups

Good for

moderate period days, light bladder leaks, sweat

Absorbs

~1-1.5 regular pads, ~2-3 super tampons, ~0.5-1 menstrual cups

Good for

light period days, sweat, sweat and discharge

Absorbs

~1-3 pantyliners, ~1-3 regular tampons, ~0.5 menstrual cups

Good for

Everyday Wear, No leakproof protection

Absorbs

0 tsp

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Leakproof Best-Sellers

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Your leakproof questions, answered.

Bundle & Save Offer - Terms & Conditions

*Offer valid on select underwear styles on knix.com and knix.ca, while supplies last. When you purchase three or more eligible styles from the same category, you’ll receive the corresponding offer:

Light: 3 for $60
Heavy: 3 for $75
Overnight: 3 for $99

Exclusions: Leakproof CoreLove High Rise, Leakproof Modal Rib Boxer Brief, Luxe Modal Leakproof Sleep Boxer, Leakproof Cotton Modal Bikini, Leakproof Cotton Modal High Rise, all Thigh Saver styles and Last Call items.

Discount is automatically applied at checkout and is based on eligible items in your order. No rain checks or price adjustments on previous purchases.

What is Leakproof technology and how does it work?

Are Leakproof products tax-free?

*Period underwear and pads are exempt from federal sales tax in Canada. They are also exempt from most provincial / harmonized sales taxes. But are subject to the following provincial sales tax rates which will apply to orders shipped to the following provinces and to orders purchased in retail stores located in the following provinces: British Columbia and Manitoba: 7% PST; Saskatchewan: 6% PST.

Need more info? Click here

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Really, it’s just better underwear

So you feel fresh and in-control.

Leakproof Absorbency Guide

Good for

Absorbs

Find the right pair for you

Leakproof Best-Sellers

Leakproof UltraThin No-Show High Rise

Super Leakproof® Dream Short

Leakproof UltraThin No-Show Bikini

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Light Leakproof UltraThin No-Show Thong

Light Leakproof No-Show Boyshort

Your leakproof questions, answered.

Bundle & Save Offer - Terms & Conditions

What is Leakproof technology and how does it work?

Are Leakproof products tax-free?

What’s a gusset?

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