The Denim Arm Sling with Thumb Loop is designed to enable the wearer to apply it independently. The deep sling is made of cotton/poly fabric and features a single shoulder strap, a thumb loop, and easy buckle adjustment. SIZES: Small, medium, large, and extra large. DIMENSIONS (WxD): The small sling is 13 x 5 inches, the medium is 16 x 6 inches, the large is 19 x 7 inches, and the extra large is 22.5 x 8 inches. The strap is 1.5 inches wide. COLOR: Blue denim.