Lightest Absorbency

Lightest periods, spotting, sweat & discharge - absorbs about 0.5-1 regular tampon worth.

Light Leakproof No-Show Thong

$12.00 USD
$20.00

40% off

Color: Cherry, limited edition

+10
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Light Leakproof No-Show High Rise Thong

$20.40 USD
$24.00

15% off

Color: Sola

+1
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Light Leakproof Gossamer Lace Thong

$20.40 USD
$24.00

15% off

Color: Black

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Light Leakproof No-Show Bikini

$13.00 USD
$22.00

40% off

Color: Cherry, limited edition

+20
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Light Leakproof Gossamer Lace Bikini

$22.09 USD
$26.00

15% off

Color: Black

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Light Leakproof Gossamer Lace French Cut

$16.00 USD
$28.00

42% off

Color: Dark Cherry, limited edition

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Light Leakproof No-Show Boyshort

$18.70 USD
$22.00

15% off

Color: Midnight

+18
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Light Leakproof No-Show High Rise

$15.00 USD
$26.00

42% off

Color: Glacier, limited edition

+15
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Leakproof Logo Rib Modal Boxer Brief

$32.30 USD
$38.00

15% off

Color: Black

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Leakproof Thigh Saver® 6”

$23.00 USD
$39.00

41% off

Color: Leopard Print, limited edition

+3
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Light Absorbency

Light periods, backup protection & sweat - absorbs about 1-3 regular tampons’ worth.

Light Leakproof UltraThin No-Show Thong

$19.54 USD
$23.00

15% off

Color: Midnight

+8
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Light Leakproof UltraThin Thong 3-Pack Gift Box

$31.00 USD
$62.00

50% off

Color: Shine Bright/Cherry/Olive, limited edition

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Light Leakproof No-Show French Cut

$12.00 USD
$24.00

50% off

Color: Pink Lemonade, limited edition

+18
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Leakproof UltraThin No-Show French Cut

$16.00 USD
$27.00

40% off

Color: Mushroom, limited edition

+12
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Leakproof Logo Rib Modal French Cut

$23.79 USD
$28.00

15% off

Color: Grey

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Leakproof Contour Thigh Saver® 6”

$39.09 USD
$46.00

15% off

Color: Warm Sand

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Leakproof Thigh Saver® 10”

$37.40 USD
$44.00

15% off

Color: Sola

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Medium Absorbency

Medium periods, light bladder leaks & sweat - absorbs about 2-3 super tampons’ worth.

Leakproof No-Show Thong

$16.00 USD
$27.00

40% off

Color: Rose Water

+10
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Leakproof UltraThin No-Show French Cut

$16.00 USD
$27.00

40% off

Color: Black Shimmer, limited edition

+12
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Leakproof UltraThin High Rise 3-Pack Gift Box

$39.00 USD
$78.00

50% off

Color: Shine Bright/Cherry/Olive, limited edition

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Leakproof UltraThin No-Show Bikini

$21.25 USD
$25.00

15% off

Color: Warm Sand

+10
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Leakproof Cotton Bikini

$19.54 USD
$23.00

15% off

Color: Pepper

+1
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Leakproof UltraThin Bikini 3-Pack Gift Box

$33.00 USD
$67.00

50% off

Color: Shine Bright/Cherry/Olive, limited edition

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Astrology Collection Leakproof UltraThin Bikini

$15.00 USD
$25.00

40% off

Color: Capricorn, limited edition

+8
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Leakproof Cotton Modal Bikini

$17.00 USD
$29.00

41% off

Color: Black

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Leakproof UltraThin No-Show High Rise

$24.65 USD
$29.00

15% off

Color: Midnight

+10
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Leakproof Cotton High Rise

$22.95 USD
$27.00

15% off

Color: Pepper

+1
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Leakproof Cotton Boybrief

$29.75 USD
$35.00

15% off

Color: Rose Water

+1
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Luxe Modal Leakproof Sleep Boxer

$22.00 USD
$38.00

42% off

Color: Dark Cherry, limited edition

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Heavy Absorbency

Heavy periods, overnight protection & light bladder leaks - absorbs about 3-6 super tampons’ worth.

Super Leakproof® No-Show Bikini

$24.65 USD
$29.00

15% off

Color: Black

+4
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Super Leakproof® No-Show Boyshort

$24.65 USD
$29.00

15% off

Color: Warm Sand

+5
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Super Leakproof® No-Show French Cut

$19.00 USD
$32.00

40% off

Color: Mushroom, limited edition

+12
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Super Leakproof® No-Show High Rise

$28.90 USD
$34.00

15% off

Color: Midnight

+6
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Super Leakproof® Dream Short

$35.69 USD
$42.00

15% off

Color: Black

+4
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Ultra Absorbency

Extra heavy periods, overnight protection & light bladder leaks - absorbs about 7-9 super tampons’ worth.

Ultra Leakproof Zones+ Bikini

$30.59 USD
$36.00

15% off

Color: Black

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Ultra Leakproof Zones+ High Rise

$33.15 USD
$39.00

15% off

Color: Warm Sand

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Reusable Pads

NEW Reusable Pads! Leak-free protection designed with a comfortable barely-there feel. Super-thin, and easy-to-wash Leakproof pad that you can wear and rewear. Now available in super-absorbent Regular and Overnight styles for confident protection 24/7.

Up to 50% off Teen Period Underwear

Moisture-wicking, odor-crushing, life-changing leakproof undies.

Teen Super Leakproof® Sleepover Short

$23.00 USD
$39.00

41% off

Color: Guava, limited edition

+3
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Teen Super Leakproof® No-Show Bikini 2-Pack

$50.00 USD

Color: Cosmo/Raspberry, limited edition

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Teen Super Leakproof® No-Show Bikini

$17.00 USD
$25.00

32% off

Color: Perfect Pear, limited edition

+7

Teen UltraThin Bikini: Holiday 3-Pack

$46.00 USD
$66.00

30% off

Color: Comet/Atmosphere/Starstruck, limited edition

Teen Leakproof Cotton Bikini

$17.00 USD
$20.00

15% off

Color: Pepper

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Teen Light Leakproof No-Show Boyshort 3-Pack

$39.00 USD
$57.00

31% off

Color: Ruby/Sugar Plum/Posy, limited edition

+2

Teen Light Leakproof No-Show Boyshort

$16.15 USD
$19.00

15% off

Color: Black

+4
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Teen Leakproof UltraThin No-Show Boyshort

$18.70 USD
$22.00

15% off

Color: Black

+1
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Teen Leakproof UltraThin No-Show Bikini

$18.70 USD
$22.00

15% off

Color: Warm Sand

+1
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Teen Leakproof UltraThin No-Show Boyshort 3-Pack

$46.00 USD
$66.00

30% off

Color: Ruby/Sugar Plum/Posy, limited edition

+2

Teen Light Leakproof No-Show Bikini

$16.15 USD
$19.00

15% off

Color: Night Sky, limited edition

+5
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Teen Super Leakproof® No-Show Boyshort

$17.00 USD
$25.00

32% off

Color: Perfect Pear, limited edition

+3

Teen Light Leakproof No-Show Bikini 3-Pack

$34.00 USD
$57.00

40% off

Color: Lucky Star/Berry/Cosmo, limited edition

+3
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Teen Super Leakproof® No-Show Bikini 3-Pack

$63.75 USD
$75.00

15% off

Color: Black

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Teen Super Leakproof® No-Show Boyshort 3-Pack

$45.00 USD
$75.00

40% off

Color: Lucky Star/Berry/Cosmo, limited edition

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Teen Light Leakproof No-Show Bikini 2-Pack

$22.00 USD
$38.00

42% off

Color: Black

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Teen Light Leakproof No-Show Boyshort 2-Pack

$38.00 USD

Color: Lucky Star/Berry, limited edition

+1

Teen Super Leakproof® No-Show Boyshort 2-Pack

$30.00 USD
$50.00

40% off

Color: Black

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Teen Leakproof UltraThin No-Show Bikini 3-Pack

$39.00 USD
$66.00

40% off

Color: Gumdrop/Blueberry/Blue Gingham, limited edition

+3
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Stock Up & Save

Get all the period protection you need with Knix leakproof underwear kits. Find your perfect assortment of absorbent, comfortable, and machine-washable underwear, and enjoy worry-free protection no matter how heavy your flow.

Reusable period underwear that truly works - absorbent, leak resistant, comfy and easy to wash. Find your perfect style today!

Your leakproof questions, answered.