Marine Serre and Under Armour unveil their first-ever capsule collection, merging technical sportswear, fashion innovation and performance-driven design.
The worlds of luxury fashion and high-performance sportswear continue to collide — and few collaborations feel as instinctive as the new partnership between Marine Serre and Under Armour. Launching on 5 June, the debut capsule marks a significant moment for both brands, arriving during Under Armour’s 30th anniversary year while opening a new chapter where technical innovation meets fashion’s evolving obsession with movement, discipline and functionality.
At the centre of the collaboration lies a deceptively simple idea: the baselayer. Treated as both a technical necessity and a symbolic design starting point, the collection transforms the garment closest to the body into the foundation of an entire aesthetic language. Drawing inspiration from early 2000s sportswear, Under Armour HeatGear technology and the cult UA Proto Speed trainer from the late 2000s, the capsule builds a visual identity rooted in physicality, repetition and movement.
For Marine Serre, the collaboration also carries personal meaning. Before becoming one of fashion’s most closely watched designers, she trained and competed as a professional tennis player — an experience that continues to shape her relationship with the body, discipline and functionality in clothing. That athletic background gives the collection an emotional clarity, where performance never feels decorative but deeply lived.
“Sport has always been part of my life. With Under Armour, I wanted to explore the beauty of movement through pieces that combine performance, precision and beauty — starting from the baselayer, the closest element to the body and to the athlete’s experience,” explained Marine Serre.
The capsule embraces a sharp, reduced visual language built around sleek silhouettes, graphic black-and-white contrasts and a heightened sense of structure. Under Armour’s HeatGear fabric forms the technical backbone of the collection, while Serre introduces her unmistakable aesthetic through exclusive graphic treatments that subtly reinterpret her signature design codes.
One of the standout moments of the collaboration arrives through the return of the UA Proto Speed II, revived from the archives for the first time since the late 2000s. Rather than reinventing the silhouette entirely, Marine Serre and Under Armour preserve its athletic DNA while refining it through layered textiles, sculptural leather panel detailing and collaborative branding positioned discreetly across the shoe.
For Under Armour, the collaboration reflects a broader idea of progress through repetition and precision. “Whether in training or in design, progress comes from deliberate repetition and purposeful execution,” explained Yuron White, Senior Vice President and General Manager of Sportswear and Collaborations at the brand.
