5-oz. 100% polyester. Single knit fabric. Moisture wicking fabric draws perspiration away from the skin. UPF 25 protection technology protects your skin from the sun's harmful rays. Enhanced stretch technology with innovative seams to redefine range of motion. Self-fabric collar, open placket, feminine ruching shoulder detail. Double needle hemmed bottom with side vents. Contrast Perry Ellis woven label on bottom left front.