About us

SEFI is more than just clothing; it's a community. We’re dedicated to empowering women to feel confident, strong, and sexy. We're at our best when you feel yours.

 

Founded by athlete Stef Williams, SEFI fills the gap for women seeking activewear that is both functional and stylish. Our high-quality, versatile pieces are designed with comfort, style, and confidence in mind, allowing effortless combinations that feel authentic and look flawless.

 

With years of experience in the activewear industry, Stef developed a deep understanding of what women need. Recognising a demand for chic, high-performance activewear, she launched SEFI in 2021.

 

Stef envisioned timeless, stylish activewear that seamlessly adapts to your body—perfect for workouts, weekends, and everything in between.

 

Inspired by her own journey, Stef created designs that celebrate a woman’s natural shape, meticulously testing fabrics and fits to craft collections that offer an unparalleled blend of fit, style, and performance while enhancing the natural curves of a woman’s body, maximising comfort, versatility, and elegance.

 

The result is SEFI: premium activewear made from luxurious fabrics that mold perfectly to your body, embracing femininity & empowering women to feel their best. SEFI is the evolution of sportswear, where performance & style goes hand in hand. SEFI supports & joins you through your workouts, fits you with confidence &  allows you to be in the moment with your movement. It doesn't matter who or where you are, if you move, SEFI moves with you. 

 

SEFI is made for women by women. We are incredibly proud to work with an 80% female workforce; even our manufacturing partners are co-owned by women. We are committed to supporting female partnerships and connecting with inspiring women worldwide.

 

Stef and the SEFI team pour their heart and soul into every piece, and this is just the beginning. SEFI evolves with the feedback from women like you, who inspire our designs. Thank you for your support; we can’t wait to see you in SEFI.

  

Let SEFI take you on your next adventure.