ActionLine KY-21020 Massager Balls, Muscle Knot Relief Balls (Set of 3), Outdoor sports fitness

* 3 different hardness for acupressure and trigger point * Hardness: Red-hard, Orange-Medium, Yellow-Soft. * Relax the muscle of your glute and lower back while in sitting position. * For long distance trip, use the ball to get rid of body discomfort. * For shoulders and upper back place the ball between your bank and wall * Relieves pain associated with muscle knots in your hamstrings, IT band (sides of the legs), calves, upper back, glutes, jaw, hands and feet