Claudia Glass

Claudia Glass, Founder From Swimrun Bras to the First Intelligent Sports Bra While running during summer vacations, I longed to swim afterward, but my sports bra and shorts weren’t up to the challenge. After finding no hybrid gear that worked both on land and in water, I decided to create it myself. Collaborating with scientists and textile engineers at Swiss Federal Laboratories for Materials Science and Technology (Empa), we developed a fast-drying, high-tech fabric and designed the Swijin double-layer bra, offering land support and swimsuit-like compression. After a newspaper article about our research, elite Swiss athletes approached us, seeking a sports bra that truly addressed their needs. Despite many sports bras on the market, none solved key issues: poor support, slow drying, chafing, and restrictive underbust bands. This sparked a new mission: to reinvent the sports bra with input from sports physiologists, textile engineers, and elite athletes. We created bras with underbust bands that allow easy breathing, seamless designs to prevent chafing, and superior upper breast support for optimal performance.