Fabric: 50% Cotton inner, 50% BIZ COOL Polyester Pique Outer. 170 GSM. UPF rating - Good. Features: Matching knitted twin stripe collar and cuff. Loose pocket included. Sizes: S - 3XL, 5XL. Colours: Black/Red/White, Steel Grey/Black/White, Royal/White/White, Navy/White/White, Navy/Red/White, Black/White/White. Cares: Extras.