60% Cotton, 40% Polyester. Short raglan sleeves. Knitted rib collar and cuff. Button fastening. Contrast stripe tape on placket and back neck. Antibacterial. Quick dry. Trespass Mens Chest Sizing (approx): S - 35-37in/89-94cm, M - 38-40in/96.5-101.5cm, L - 41-43in/104-109cm, XL - 44-46in/111.5-117cm, XXL - 46-48in/117-122cm, 3XL - 48-50in/122-127cm.