4 oz., 100% polyester interlock; 50+ UPF rating, excellent UV protection; wicks moisture and dries fast; Double-needle stitching throughout; Narrow ribbed collar; Perfect for sublimation or printing; Tear-away label; "A-" list status from CDP (Carbon Disclosure Project); Energy Star Partner of the Year (14 consecutive years); Every piece of Hanes apparel purchased from our company qualifies for Hanes4Education