This functional collection offers a man all the comforts that are important to him, while still keeping style in the game. Four way stretch conforms to his motions. Quick dry technology and mesh panels keep him cool and dry during an intense workout. 92% Polyester / 8% Spandex. Crew Neck Muscle Tee: • Relaxed fit. • Accentuates and defines arms. • Provides ultimate comfort. • Ideal for active lifestyle. • Quick dry technology allows the body to stay dry & cool for ultimate comfort. • Mesh inserts provide breathability.