The Harlequins rugby club has extended its long-term partnership with Castore. Thanks to the five-year deal, the British performancewear brand will continue as the Gallagher Premiership club’s official kit and apparel supplier until 2030.
The agreement covers all senior men’s and women’s teams, as well as academy and supporter merchandise.
What’s new in the deal
The renewed deal will include expanded merchandising opportunities and greater integration of Castore’s design and innovation teams into Harlequins’ player performance environment. The club will continue to wear bespoke kits co-created with Castore, while retail operations will further align in online and physical channels.
Castore challenges Nike and Adidas with rugby partnerships
For Castore, the renewal reflects a long-term ambition to cement leadership in the teamwear and rugby performancewear category, following similar partnerships with the Saracens, the Crusaders and national teams. For the Harlequins, it ensures continuity in technical quality and a globally recognized partner as the club builds commercial value through apparel sales and brand visibility.
This extension is another sign of Castore’s shift from a challenger brand to an established supplier for top-tier sports. As competition intensifies between Nike, Adidas, Macron, Canterbury and newer entrants, long-term deals like this position Castore as a credible alternative for elite clubs seeking bespoke service and shared innovation.
The bottom line
The Harlequins-Castore renewal signals confidence in the brand’s technical capabilities and design-led approach, reaffirming the convergence of performance innovation and commercial teamwear strategy in the sporting goods industry.
