100% Organic Cotton. Design: Back Print, Mountain, Printed, Text, Tree Ring. Neckline: Crew Neck. Sleeve-Type: Short-Sleeved. Fabric Technology: Breathable, Lightweight. Fit: Regular. Sustainability: GMO Free. XS: 29 in. S: 37 in. M: 40 in. L: 43 in. XL: 46 in. XXL: 49 in. Mountain Warehouse Mens Keswick Tree Ring Organic T-Shirt