100% Polyester. Design: Contrast. Neckline: Crew Neck. Sleeve-Type: Short-Sleeved. Fabric Technology: Breathable, IsoCool, Lightweight, Moisture Wicking, Quick Dry, UV Protection. Sun Rating: UPF 50. XXS: 34 in. XS: 35 in. S: 37 in. M: 40 in. L: 43 in. XL: 46 in. XXL: 49 in. 3XL: 53 in. 4XL: 55 in. Ref: UTMW1464