100% Polyester. Design: Ribbed Effect. Sleeve-Type: Long-Sleeved. Neckline: Standing Collar, Zip Neck. Fabric Technology: Breathable, Heat Retention, Isotherm, Lightweight, Moisture Wicking, Quick Dry. 4 UK: 32 in. 6 UK: 33 in. 8 UK: 34 in. 10 UK: 35 in. 12 UK: 37 in. 14 UK: 39 in. 20 UK: 47 in. 22 UK: 50 in. 24 UK: 52 in. 26 UK: 54 in. 28 UK: 56 in. 18 UK: 44 in. 16 UK: 41 in. Ref: UTMW531