Knix Launches New Period-Proof Swimwear Collection for Spring

Shop three SI Swimsuit-approved picks from the line here.
Knix swimwear

Knix spring swimwear.

If you’re dreaming of warmer days ahead—and new swimwear to flaunt at the pool or beach—you’re in luck. Today,

Knix launched a collection

of one-piece swimsuits, bikinis and cover-ups perfect for your next getaway.

“The Knix and Kt by Knix Swim Collection drop coincides perfectly with the upcoming spring break and summer vacation planning season,” the brand stated in a press release. “Be prepared to discover an extensive range of stylish swimsuits, available in new colors and prints. Whether you prefer a classic one-piece or a trendy bikini, our collection offers something for everyone. Embrace your unique style and feel fabulous in our swimwear, knowing that you are supported by our Leakproof technology.”

Known for its period panties, Knix first introduced swimwear in 2019. As you may recall, 2022 co-Rookie of the Year Katie Austin modeled a Knix bikini in the Dominican Republic for the ’23 SI Swimsuit Issue, so we can attest to the functionality of the brand’s swimwear. Knix’s Leakproof Swim technology absorbs approximately 1.5 to 3.4 teaspoons of liquid, which is roughly the equivalent of one to three regular tampons. So, regardless of your cycle, you can enjoy some fun in the sun without worrying about leaks. 

Below, shop three SI Swimsuit-approved styles from the new collection.

Leakproof Deep V One-Piece Swimsuit, $100 (

This V-neck style features a plunge neckline and is made of the brand’s premium UPF50+ fabric. It’s equipped with light absorbency and is ideal for light period days.

Scoop Bikini Top, $55 and Leakproof Sculpt High-Rise High-Cut Swim Bottom, $50 (

The limited-edition “Oceana” hue just screams “spring.” Keep in mind, if you’re looking for a less form-fitting style with the bottoms, be sure to size up.

Sarong, $35 (

Every new swimsuit deserves a new cover-up to go with it! This cute sarong is available to match both suits above, and also comes in an animal print and lush green hue.

Shop the complete Knix swimwear collection



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Cara O’Bleness


Cara is a trending news writer/editor for Sports Illustrated Swimsuit. A passionate writer and editor with more than 10 years of experience in print and online media, she loves storytelling and believes that words have the power to change the world. Prior to joining the team, Cara worked as a writer and editor across a number of content verticals, including food, lifestyle, health and wellness, and small business and entrepreneurship. In her free time, Cara loves reading, spending time with her family and making her way through Michigan’s many microbreweries. She is a graduate of Michigan State University's School of Journalism.