Can be attached to feet and used while walking or standing for balance and proprioceptive training. Attach them to hands for strengthening of shoulder and back musculature while performing push-ups on the floor or against a wall. Easily attach with hook and loop closures. Comes in two sizes: 1-1/2″ for beginners and 2″ for more advanced training. Can support up to 500 lbs. Latex free.