88% Polyester, 12% Elastane. Design: Contrast Piping, Logo. Neckline: Crew Neck. Sleeve-Type: Short-Sleeved. Fabric Technology: Breathable, Moisture Wicking. Regulates Temperature, Unrestricted Movement. 8 UK: 33 in. 10 UK: 34 in. 12 UK: 36 in. 14 UK: 38 in. 16 UK: 40 in.