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Revolution Bra

Revolution Bra

Oh my!

New colors

Shop bestselling & brand new colors in all our Wireless Bras & Period Underwear.

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Knix Underwear on Hangers

Knix Underwear on Hangers

Bundle & Save on Period Panties

Save up to 25% on Leakproof & Essential Panty styles. Discount applied automatically. All you have to do is choose.

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New Sleep for September

New Sleep for September

JUST ARRIVED

Go to bed gorgeous

Shop our latest sleepwear additions in new colors and an indulgent new animal print.

SHOP NEW SLEEPWEAR

WE'RE REDEFINING INTIMATES

At Knix, we believe that everyone should be able to live unapologetically free.

Free from judgment. Free from self-doubt. Free to be yourself.

Ways to save

Save up to 20%

Bundle & Save up to 25%

Stock up and save when you buy more pairs.
For a limited time, including Teen Underwear!

Save on Period Kits

Save on Period Kits

Skip the guesswork with curated Period Underwear Kits and save 10–15%

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Earn points with Knix Rewards

Spend $1, earn 1 point every time you shop. Redeem $10 every 100 points.

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We work with our community to make products that combine comfort with style and affordability.

KT Book

Our very first children’s book

We wrote a book to prepare kids and parents for when that first period arrives, and to remind them that there’s absolutely nothing “ew” about it.

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Abigail has 33" hips and wears a Knix size XS color:black

Super Leakproof High Rise

Chinthiya has 42" hips and wears a Knix size L color:cavassa

Leakproof Bikini

Abigail has 33" hips and wears a Knix size XS color:warm sand

Leakproof High Rise

Felixe (she/her) has 44” hips and is wearing a size XL color:poolside

Teen Leakproof Underwear Bikini

Becca has 47" hips and wears a Knix size XL color:berry

Essential High Rise

Marlene has 50" hips and wears a Knix size XXL color:black

Super Leakproof Dream Short

Rue has 34" hips and wears a size S color:sable

Super Leakproof Bikini

Chinthiya has 42" hips and wears a Knix size L color:pink ginger

Essential Boyshort

Rose (she/her) has 35" hips and is wearing a size M color:shady blue

Teen Super Leakproof Underwear Bikini

Onosholema (she/her) has 36" hips and is wearing a size M color:electric petals

Teen Super Leakproof Sleepover Short

Brittnee is 5'9" with 50" hips and wears a size XXL color:black

CoreLove Leakproof High Rise

Best Sellers

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color:Rose Water

WingWoman Contour Bra

color:warm sand

Revolution Bra

color:black

Shadow Mesh Bra

color:Knix Starter Kit style:bikini

Knix Starter Period Kit

Save 15%

Jay has 36" hips, 27" waist and wears a Knix size S color:rose water

Leakproof High Rise

Amber has 38" hips and wears a Knix size M color:midnight

Leakproof French Cut

Maya has 47" hips and wears a size XL color:dark cherry

Super Leakproof Dream Short

Front View color:warm sand

Leakproof Thigh Saver 6”

Hanna is a 32B and wears a Knix size S color:black

Leakproof Classic One Piece Swimsuit

Amber has 38" hips and wears a size M color:cloud

LeakStrong™ Leakproof Skort

Analysa has 46.5”" hips and wears a Knix size XXL color:Dahlia

LeakStrong™ Leakproof Short