100% Organic Cotton. Fabric: 4 Layer. Design: Plain. Neckline: Crew Neck, Elastane, Ribbed. Sleeve-Type: Short-Sleeved. Reinforced Shoulder Seams, Twin Needle Neck. Fit: Modern. 160gsm. Sustainability: Oeko-Tex Standard 100 Certified. XS: 37 in. S: 39 in. M: 41.5 in. L: 44 in. XL: 47 in. XXL, 5XL: 50 in. 3XL: 53 in. 4XL: 56.5 in. Ref: UTBC5871