WIDELY USED: convenient for the gym, office or on the road. can be used on your hands, forearms, shoulders, back, feet, ankles, heels, calves. Suitable for most people from youth to senior who has foot pain. Massage roller suits a variety of people, such as convenient for the gym, office or on the road. can be used on your hands, forearms, shoulders, back, feet, ankles, heels, calves. Suitable for most people from youth to senior who has foot pain.