Material: 60% cotton, 40% polyester. UPF 40+ UV protection. Quick drying with inherent stretch properties. Active fit. Self fabric collar. Taped neck. Twin needle stitching. Tear out label. Chest size to fit: (xs): 35-37, (S): 37-39, (M): 39-41, (L): 41-43, (XL): 43-45, (XXL): 45-48in. Ref: UTPC3903