Perfect for personal use, it works great for both upper and lower body work. Helps relieve muscle knots, aches, cramping, spasms and stiffness. Quickly massage any part of the body without getting down on the ground. Firm design—no bending or breaking. No hard cold plastics. No spindles or beads. No pinched skin, pulled out hair, or snagged clothing. Works on all muscle groups including neck, shoulders, arms, upper back, lower back, hamstrings, glutes, quads.