80% Merino Wool, 20% Polyester. Fabric: Performance. Design: Plain. Cuff: Fitted. Sleeve-Type: Long-Sleeved. Neckline: Round Neck. Fabric Technology: Anti-Bacterial, Breathable, Lightweight, Moisture Wicking. 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.