ForceGrip™ Enhance Hand EnduranceChest Expander for Upper Body Strength Training, Home Gym The Professional Speed Bag with its "360 degree Rotating Grips" is perfect for enhancing cardio aerobic conditioning and toning muscles. Made to emulate the movement a boxer makes when punching a speed bag this is the "go anywhere" model for a workout on the go. It works perfect while sitting or standing. Upper Body Exercise Equipment: This power bar is specifically designed to train arms,