Summer Sale

Up to 50% off Summer Sale valid from June 21, 2023 to June 28, 2023 at 11:59 PM PST. Prices as marked. Items that are 40-50% off are final sale, meaning no returns, exchanges, or refunds can be accommodated. Items that are 30% off are eligible for exchange or store credit. Sale items are not eligible for our First Pair Risk-Free Policy. Offer only applicable on select styles of regularly priced Period Underwear, Period Swim, Period Active, and Reusable Pads and excludes Period Kits and Last Call. No discount codes or bundle offers may be used during the sale. Applies only to in-stock items and cannot be extended after the listed date. No price adjustments for previous orders. No rain checks. Knix store locations include Santa Monica, San Diego, and San Francisco. Free Shipping available on orders over $70+ USD before tax and after discounts and applies to shipping addresses within the US. 

Items that are 40-50% off are final sale, meaning no returns, exchanges, or refunds can be accommodated. Items that are 30% off are eligible for exchange or store credit. Sale items are not eligible for our First Pair Risk-Free Policy. Please see our full return policy here. 

All of our period underwear, swimwear, reusable pads, and activewear have our patented leakproof technology built right in.

First Layer: Wicks away sweat and moisture while neutralizing odors to keep you fresh all day long.
Second Layer: A super thin, highly absorbent liner that holds the power of 3–20 tampons or pads.
Third Layer: A secure, liquid-resistant outer layer keeps leaks from happening.

The short answer: nope! Depending on the absorbency level of your period underwear and the heaviness of your flow, you can wear our period undies on their own or as a backup to tampons or menstrual cups. You can wear our High and Super absorbency underwear alone and be totally protected, while our Medium absorbency underwear can be worn alone on lighter days or as backup on heavier days.

Underwear

Step 1: Give your underwear a quick rinse under cold water.
Step 2: Throw it in the washing machine with your regular clothes. Wash on cold with mild detergent (no softener or bleach).
Step 3: There are two ways to dry them depending on the undies you have: lay flat to dry for medium absorbency products, or tumble dry on low for high to super absorbency products.
Step 4: That’s it! No ironing needed.

Leakproof Tights & Leotards

Quickly rinse the gusset before you throw your tights or leotard in the machine. Wash on cold with mild detergent, then lay flat to dry. That's it!

Swimwear

Machine wash cold and lay flat to dry. Do not bleach, iron, or dry clean.

Check out our size chart here. If you want some help, we have virtual fitters ready on deck to help you find your perfect fit. Book a video call with them today.