60% Polyester, 38% Nylon, 2% Elastane. Fabric: 4 Way Stretch. Design: Iridescent, Logo, Ribbed. Neckline: Crew Neck, Ribbed. Sleeve-Type: Ribbed, Short-Sleeved. Fabric Technology: UA Rush. Seamless. 8 UK: 36 in. 10 UK: 38 in. 12 UK: 38.5 in. 16 UK: 44 in.