Relaxus Acu-Reflex Massage Balls are the perfect solution for aching muscles and tightness in your joints. Rolling these massage balls in your hands or under your feet stimulates acupressure points, helping to reduce inflammation, improve circulation and provide an indulgent massage experience. The texture of the ball provides a gentle but effective deep-tissue massage while increasing blood flow to relieve muscle tension and fatigue.This durable PVC massage ball instantly soothes away tension, tightness and stiffness while helping to promote blood circulation in the body. Its unique design features textured ridges that target key pressure points along your back, neck, legs and arms – providing a deep-tissue massage experience like no other.Spiky Ball.