100% Cotton. Fabric: Carbon Brushed, Soft Touch. Design: Graphic Print, Logo, Shamrock, Vintage. Neckline: Crew Neck, Ribbed. Hem: Rolled Back Cut Seams, Twin Needle Stitch. Sleeve-Type: Rolled Back Cut Seams, Short-Sleeved. Chain Stitch, Twin Needle Sleeves. 100% Officially Licensed. Fit: Loose. Please Note: Shrinkage Will Occur After Washing. XS: 38.5 in. S: 40 in. M: 42 in. L: 43.5 in. XL: 45 in. XXL: 46.5 in. 3XL: 48 in. Ref: UTGD2657