Knix
Knix is an intimates brand that designs leakproof underwear, bras, swimwear, and activewear.
Last updated September 15, 2026
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Overview
Knix is an intimates brand founded by Joanna Griffiths. The brand states that it designs game-changing intimates, swimwear, and activewear, and that Griffiths invented leakproof underwear and pioneered a new product category. Its product range includes leakproof underwear, bras, apparel, shapewear, sleep, active, swim, teen, and mens categories, with items such as the Super Leakproof® Dream Boxer™, Super Leakproof® Dream Short™, Revolution V-Neck Bra, and Leakproof UltraThin No-Show Bikini.
History
Knix was founded by Joanna Griffiths. According to the brand's About Us page, Griffiths founded Knix to radically transform the intimates industry, frustrated by the lack of innovation in underwear—especially for people dealing with leaks—and invented leakproof underwear, pioneering a new product category. The page also presents a timeline with years 2013, 2014, 2015, 2017, 2018, 2019, 2020, 2022, 2023, 2024, and 2025.
Products and positioning
Redefining intimates with leakproof innovation and inclusivity.
Super Leakproof® Dream Boxer™
Leakproof underwear priced at $48.00 USD.
Super Leakproof® Dream Short™
Leakproof underwear priced at $42.00 USD.
Revolution V-Neck Bra
Bra priced at $65.00 USD, described as 'Our #1 Bra'.
Leakproof UltraThin No-Show Bikini
Leakproof underwear priced at $27.00 USD, described as '#1 Daytime Solution'.
Shape & Smooth Bra
Wireless t-shirt bra priced at $68.00 USD with 360° smoothing, no-spillage design, molded cups, and mesh panels.
Recent events
Knix and Anna Sui collaborate on a collection[5]
Reported:
Knix collaborated with fashion designer Anna Sui on a collection featuring Knix designs with prints from the Anna Sui archives. The article describes it as Knix’s first venture into the fashion space.
Sources5 sources
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