10k+ 5-star reviews

New and highly giftable

Don’t miss your chance at giving cozy mornings and nights with our plush robe and slippers in fun prints and colors. Hot gifting tip: get both in a gift set.

New and highly giftable

Don’t miss your chance at giving cozy mornings and nights with our plush robe and slippers in fun prints and colors. Hot gifting tip: get both in a gift set.

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First Pair Risk-Free

Top Gifts for Teens

Heaviest Absorbency Yet

Super Leakproof® Sleepover Boxer

Heavy Absorbency

$45 ^USD Back in Stock

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WHAT EVERY TEEN NEEDS

Sleep Robe

$60 ^USD New

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GIFT-BOXED & READY TO GIVE

Leakproof UltraThin Bikini Holiday 3-Pack

Moderate Absorbency

$65 ^USD $72

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COZY MUST-HAVE

Plush Slippers

$38 ^USD Limited Edition

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+8
+4

Super Leakproof® Sleepover Short

Heavy Absorbency

$45 ^USD 2 for $39 EACH

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Best Seller

+3

Period Swim Sport One-Piece

Moderate Absorbency

From $35.20 ^USD New Colors

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+4

Super Leakproof® No-Show Underwear Bikini 3-Pack

Heavy Absorbency

From $75 ^USD $81 Save up to 10% off

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Seamless pullover style

On-The-Daily Bra

From $35 ^USD New

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leader in leakproof for teens

Everyone’s switching to period undies

2 million+ people are ditching the waste from disposables and anxiety about leaks. Period Undies are seamless, comfy, and built with a hidden liner.

Everyone’s switching to period undies

2 million+ people are ditching the waste from disposables and anxiety about leaks. Period Undies are seamless, comfy, and built with a hidden liner.

Machine Washable

New Arrivals

+8
+4

Super Leakproof® Sleepover Short

Heavy Absorbency

$45 ^USD 2 for $39 EACH

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+4

Super Leakproof® No-Show Underwear Bikini 3-Pack

Heavy Absorbency

$75 ^USD $81 Save up to 10% off

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SELLING FAST

+7
+3

Leakproof UltraThin No-Show Underwear Bikini 3-Pack

Moderate Absorbency

From $59 ^USD $72 Save up to 15% off

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Leakproof UltraThin No-Show Thong

Light Absorbency

From $24 ^USD 3+ for $21.67 EACH

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Seamless pullover style

On-The-Daily Bra

From $35 ^USD New

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Best Seller

+3

Period Swim Sport One-Piece

Moderate Absorbency

From $35.20 ^USD New Colors

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FULL COVERAGE

Period Swim Full-Coverage Bikini Bottom

Moderate Absorbency

From $18 ^USD New Colors

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COZY LUXE GIFT

Leakproof Luxe Modal Sleep Boxer

Moderate Absorbency

From $34 ^USD

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Racerback Tankini Swim Top

From $18 ^USD New Style

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FREE SHIPPING OVER $70

Every period need. Covered in a kit.

Kits designed to prep for first periods, heavy flows and everything in between.

Every period need. Covered in a kit.

Kits designed to prep for first periods, heavy flows and everything in between.

Read The Rag

Free Period Guide

Everything your teen ever wanted to know about puberty, menstruation, and more.

Download the Guide

“With this new line, teens can lean into that life well lived from their very first period”

"KT by Knix is aimed at both helping teen girls deal with the reality of periods"

“KT by Knix products are simple and easy to use — you can wear them under absolutely anything”

KT Size	Hips	Kids Pant Size	Adult Pant Size
XXS	25” - 27”	7	---
XS	28” - 30”	8 - 10	---
S	31” - 34”	12 - 14	00 - 2
M	35” - 38”	16 - 20	4 - 8
L	39” - 42”	---	10 - 14
XL	43” - 46”	---	16 - 18
XXL	47” - 50”	---	20 - 22

KT Size	Band	Hips	Kids Pant Size	Adult Pant Size
XXS	23 ³/₄" - 25 ¹/₄"	25” - 27”	7	---
XS	25 ¹/₄" - 26 ³/₄"	28” - 30”	8 - 10	---
S	26 ³/₄" - 28 ¹/₄"	31" - 34"	12 - 14	00 - 2
M	28 ¹/₄" - 29 ³/₄"	35” - 38"	16 - 20	4 - 8
L	29 ³/₄" - 31 ¹/₂"	39” - 42”	---	10 - 14
XL	31 ¹/₂" - 33 ¹/₂"	43” - 46”	---	16 - 18
XXL	33 ¹/₂" - 35 ¹/₂"	47” - 50”	---	20 - 22

KT Size	Hips	Kids Pant Size	Adult Pant Size
XXS	25” - 27”	7	---
XS	28” - 30”	8 - 10	---
S	31” - 34”	12 - 14	00 - 2
M	35” - 38”	16 - 20	4 - 8
L	39” - 42”	---	10 - 14
XL	43” - 46”	---	16 - 18
XXL	47” - 50”	---	20 - 22

KT Size	Band	Hips
XS	28"	25” - 27”
S	30"	28” - 30”
M	32"	31” - 35”
L	34"	36” - 40”
XL	36"	41” - 44”
XXL	38"	45” - 48”

Size	Bust	Hips
XS	27”	25" - 27"
S	30”	28" - 30"
M	34"	31" - 35"
L	37”	36" - 40"
XL	40”	41" - 44"
XXL	40”	45" - 48"

Size	Hips	Height	Weight
XS/S	25" - 30"	4'2" - 5'1"	65 - 100 lbs
M/L	31" - 40"	4'9" - 5'6"	105 - 130 lbs
XL/XXL	41" - 48"	4'11" - 5'6"	135 - 170 lbs

Top Gifts for Teens

New Arrivals

Absorbency Guide: Finding the Right Period Underwear for Your Teen