100% Polyester. Design: Contrast Sleeves, Plain. Neckline: Crew Neck. Sleeve-Type: Long-Sleeved. Fastening: Pull Over. Fabric Technology: Breathable, IsoCool, Lightweight, Moisture Wicking, Quick Dry. Easy-Care, Sun Protective. Sun Rating: UPF 50+. 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: UTMW111