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Life-changing Leakproof underwear
Life-changing Leakproof underwear
✓ For periods, pee, sweat, & discharge.
✓ Absorbs up to 11 super tampons.
✓ Machine washable & reusable.
✓ For periods, pee, sweat, & discharge.
✓ Absorbs up to 11 super tampons.
✓ Machine washable & reusable.
Leakproof Absorbency Guide
Good for
Ultimate peace of mind. For the heaviest period days, light bladder leaks, unexpected postpartum flow, or overnight protection.Absorbs
About 7-11 super tampons or 1.5-2.5 super pads
Built-in patented protection that feels like nothing at all
How Leakproof keeps you dry, fresh, and in control:
Wicks away moisture from your skin and fights odor.
Quickly soaks up the liquid that’s moved down from the top layer.
Seals in liquid discreetly, so leaks can’t reach your clothes or sheets.
Our patented tech locks in leaks at every edge.
Leakproof Best-Sellers
Shop All
#1 Overnight Solution
Super Leakproof® Dream Boxer™
$48.00
CAD
*Excluded from Sale
Color: Lavender Stripe Limited Edition
+1
Sale
Leakproof UltraThin No-Show High Rise
$22.40
CAD
20-30% off
Color: Meadows Limited Edition
+5
24 Hrs Only ⏰
Super Leakproof® Dream Short™
$36.00
CAD
25% off
Color: Twilight Navy
+3
Sale
Super Leakproof® Cotton High Rise
$30.60
CAD
15% off
Color: Lavender Limited Edition
+1
Sale
Leakproof UltraThin No-Show Bikini
$18.90
CAD
20-30% off
Color: Lavender Limited Edition
+6
Sale
Leakproof UltraThin No-Show Boybrief
$23.80
CAD
20-30% off
Color: Meadows Limited Edition
+4
Sale
Super Leakproof® No-Show Thong
$27.20
CAD
15% off
Color: Black with White Polka Dot Limited Edition
+1
Sale
Super Leakproof® Cotton Boybrief
$30.60
CAD
15% off
Color: Dusty Pink Limited Edition
+1
Not sure which absorbency is right for you?
How to wash
Knix underwear is 100% reusable and machine washable, just like your regular undies.
Not required. But for best results, you can rinse your leakproof with cold water in the tub or sink before washing.
Machine wash on a cold, gentle cycle with mild detergent.
For their longest life, air drying is best. Hang or lay flat to dry.
Fabric softeners, bleach, ironing, or heat from the dryer.
