88% Polyester, 12% Elastane. Design: Plain. Neckline: Crew Neck. Sleeve-Type: Short-Sleeved. Fabric Technology: IsoCool, Lightweight, Moisture Wicking, Quick Dry, UV Protection. XS: 35 in. S: 38 in. M: 40 in. L: 44 in. XL: 47 in. XXL: 50 in. 3XL: 53 in. 4XL: 56 in. Ref: UTMW370