Give your muscles a precise acupressure massage with the PinPoint Trigger Ball. Helps to release tight smaller muscle groups and "flush out" toxins which can build-up in the muscles. The blunt spikes provide acupressure release for you; feet, hands, shoulders, upper back, forearm, outer leg, glutes or hips. Ideal for use against a wall to target trigger points and tight muscles in the back, or any time your muscles feel tight! It may be small but it is mighty!