This Sleek and Sexy Open Air Powered Muscle Shirt makes for a great workout top. • Open side arm holes for maximum exposure and freedom of movement. • Deep crew style neck for a roomier fit. • Double stitch hem throughout in a contrasting black color frame out the shirt for a secure durable fit. • Front is made of a soft poly blend 70% Cotton 30% Polyester ventilated mesh for amazing airflow. • Back is a 2-ply layered style with a pop of color under the mesh for a unique look – the underlay is 100% cotton fabric.