Under Armour partners with Marine Serre to mark 30th anniversary

As Under Armour marks 30 years of innovation in sports performance this year, the American sportswear brand is turning to fashion to open a new chapter in its story. The brand unveils its first collaboration with French designer Marine Serre, revisiting one of the most emblematic products in its heritage: the baselayer- the first technical layer that has helped build Under Armour’s reputation since its founding.

This limited-edition capsule, launching on June 5, draws inspiration from both the brand’s early-2000s sportswear archives and the creative world Marine Serre has developed since establishing her label. A former elite tennis player, the French designer has made the relationship between body, movement, and clothing a cornerstone of her work- an approach that finds a natural avenue for expression here.

At the heart of the collection is the baselayer, a foundational piece for Under Armour and a hallmark of Marine Serre’s aesthetic through her ‘Second Skin’ silhouettes adorned with the Crescent Moon motif. Long confined to its purely technical role, this close-to-the-body garment is reinterpreted here as an object at the crossroads of performance, design, and personal expression.

“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 aesthetics,” says Marine Serre, the brand’s founder and creative director, in a press release.

The collection adopts a deliberately minimalist aesthetic, built around black and white. Crafted using Under Armour’s HeatGear technology, the pieces feature sleek graphic lines and an exclusive print combining Marine Serre’s signature Crescent Moon with the American brand’s logo.

The collaboration also marks the return of the UA Proto Speed II, a model from Under Armour’s archives that has not been released since the late 2000s. The trainer retains several elements characteristic of the original- most notably its multi-layer textile construction and leather overlays- while incorporating new details developed specifically for this capsule.

To accompany the launch, the two partners will open a temporary French pop-up in Paris from June 5 to 7. Located on rue de Turenne, in the 3rd arrondissement, this immersive space will invite the public to discover the collection in an environment designed around dialogue between sport, craftsmanship, and contemporary creation. The capsule will also be sold on Marine Serre’s website and in a selection of the brand’s boutiques, ahead of a global roll-out planned for later in the year across Under Armour’s channels.

This collaboration comes as Under Armour continues to pursue a growth strategy centred on sportswear and creative partnerships. Founded in 1996 in Baltimore by Kevin Plank, the brand has established itself as one of the world’s leading players in sports equipment thanks to its technical innovations in performance clothing, footwear and accessories. By teaming up with Marine Serre, the American brand further strengthens its ties with the fashion world- an arena that several major sports brands have explored in recent years in search of new avenues for growth and creative expression.