Strengthen the chest muscles. Develops upper back, arms, and shoulders. High grade latex tubing. ABS contoured handles.The chest expander is an upper body intense workout with 4-step increased endurance. Adjustable tension light to heavy strength. Builds and strengthen upper body muscle group.Strengthen the chest musclesDevelops upper back, arms, and shouldersABS contoured handlesIncludes workout chartEasy chest expander made of natural bold, thicken latex tube, high tensile strength and Eco-friendly anti-skid handle to keep you preventing your hand from falling off the chest exerciser.Simple structure is easy to be taken to office, Gym, camping or traveling, doing exercise anywhere, any time.