50% Merino Wool, 50% Polyester. Fabric: Soft Touch. Design: Plain. Neckline: Round Neck. Sleeve-Type: Short-Sleeved. Fabric Technology: Anti-Bacterial, Breathable, Lightweight, Moisture Wicking. Fit: Fitted. XXS: 33 in. XS: 35 in. S: 37 in. M: 40 in. L: 43 in. XL: 46 in. XXL: 49 in. 3XL: 53 in. 4XL: 56 in. Ref: UTMW344