100% Polyester. Fabric: Performance. Design: Plain. Neckline: Round Neck. Sleeve-Type: Short-Sleeved. Fabric Technology: Breathable, Duo Skin, Moisture Wicking, Ventilated. Unrestricted Movement. Fit: Comfort. XXS: 31 in. XS: 32 in. S: 34 in. M: 36 in. L: 38 in. XL: 40 in. XXL: 42 in. 3XL: 44 in. Ref: UTTP6552