4.7 OZ. 92% Polyester, 8% Elastane. Double Knit Fabric. Moisture wicking fabric, draws perspiration away from the skin. Brushed fabric for softer touch. Enhanced stretch technology with innovative seams to redefine range of motion. 3-button placket. Self fabric collar. Open sleeve. Double needle hemmed bottom with side vents. Contrast Perry Ellis woven label on bottom left front.