Ultra

Ultra Leakproof Zones+ Bikini

Our most absorbent underwear for protection on your heaviest days.

Tjalise has 42" hips and wears a Knix size M

NEW! Zones+ Ultra Leakproof™

Made with soft, stretchy fabric that’s quick dry for your comfort

Absorbs around 7-9 super tampons’ worth, perfect for heavier days and light bladder leaks

Designed with extra long protective coverage in the front & back

Washes just like regular underwear

Tjalise has 42" hips and wears a Knix size M

Ultra

Ultra Leakproof Zones+ Bikini

Our most absorbent underwear for protection on your heaviest days.

Ultra

Ultra Leakproof Zones+ Bikini

Our most absorbent underwear for protection on your heaviest days.

Tjalise has 42" hips and wears a Knix size M

NEW! Zones+ Ultra Leakproof™

Made with soft, stretchy fabric that’s quick dry for your comfort

Absorbs around 7-9 super tampons’ worth, perfect for heavier days and light bladder leaks

Designed with extra long protective coverage in the front & back

Washes just like regular underwear

Tjalise has 42" hips and wears a Knix size M

Ultra

Ultra Leakproof Zones+ Bikini

Our most absorbent underwear for protection on your heaviest days.

Ultra

Extra heavy periods, overnight protection & light bladder leaks - absorbs about 13-17 tsp or 65-85 mL which is the equivalent of 7-9 super tampons’ worth.

Heavy

Heavy periods, overnight protection & light bladder leaks - absorbs about 6-11 tsp, 30-55 mL or the equivalent of 3-6 super tampons’ worth.

Medium

Medium periods, light bladder leaks & sweat - absorbs about 3-6 tsp, 15 -30 mL or the equivalent of 2-3 super tampons’ worth.

Light

Light periods, backup protection & sweat - absorbs about 1.5-3 tsp, 7.5-15 mL or the equivalent of 1-3 regular tampons’ worth.

Lightest

Lightest periods, spotting, sweat & discharge - absorbs about 1-1.5 tsp, 4-7.5 mL or the equivalent of 0.5-1 regular tampon worth.

Zero

Everyday wear with no leakproof protection - zero absorbency.

	Absorbency	Good for
Ultra	Absorbs about 7-9 super tampons’ worth	Extra heavy periods, overnight protection & light bladder leaks
Heavy	Absorbs about 3-6 super tampons’ worth	Heavy periods, overnight protection & light bladder leaks
Medium	Absorbs about 2-3 super tampons’ worth	Medium periods, light bladder leaks & sweat
Light	Absorbs about 1-3 regular tampons’ worth	Light periods, backup protection & sweat
Lightest	Absorbs about 0.5-1 regular tampon worth	Lightest periods, spotting, sweat & discharge
Zero	Zero absorbency	Everyday wear with no leakproof protection

Our Leakproof Period Underwear features multi-layer technology that differs from style to style, but works to ensure you stay fresh, dry and protected. For example, in our Super Leakproof™ No-Show Bikini, the top layer wicks away moisture from your skin; the inner-layer absorbs the liquid and locks it in; and the outer layer keeps any liquid from spotting your clothes.

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129 reviews

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Nicole
4 minutes ago
Rated 1 out of 5 stars
1 Star
Very different from my first order, these have an awkward fit.
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DJ
Verified Buyer
2 days ago
Rated 5 out of 5 stars
Almost completed the switch over!
Knix is amazing. I wear them almost all the time. They are comfortable and do the job!
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Terrie G.
Verified Buyer
4 days ago
Rated 5 out of 5 stars
Great
I love these! I now don’t have to wear pads, which I hated! These are soft and feel wonderful against my skin.
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