100% Polyester. Fabric: Garment Dyed, Interlock, Knitted, Spun Dyed. Design: Plain. Neckline: Round Neck. Sleeve-Type: Short-Sleeved. 135gsm. Sustainability: Environmentally Friendly, Oeko-Tex Standard 100 Certified. XS: 33 in. S: 35.5 in. M: 37.5 in. L: 40 in. XL: 43 in. XXL: 46.5 in. 3XL: 49.5 in. Ref: UTBC5870