OVERSIZED FIT. THE MASK COULD BE FOLD AND THE HOODIE CAN BE WORN WTHOUT IT. For Spring / Summer 2025, Slam Jam and Umbro introduce a new collection inspired by stadium security, seamlessly blending formalwear with sportswear in their signature style. Rooted in British culture, the collection pays homage to heraldry, check patterns, and crafts a fresh narrative by reimagining the aesthetic of security personnel, staying true to the football-driven DNA of the Manchester-based brand.