Spiky Peanut Massager is designated for Plantar Fasciitis, Diabetic Blood Circulation Issues, Neuropathy, Arthritis, Back, Neck, Shoulder, Hand, Heel, Flat Feet, Sole & Arch Pain & Stress Relief.Perfect design plus spikes for a deep tissue massage harder to reach stabilizing muscles. These double spiky massage balls are made of super sturdy ANTI-BURST PVC material with a firmer exterior shell.Great for full body massaging, Such as your palms, feet, ankle, arms, neck and back etc. Very runners, office workers, athletes, etc. Provide you with immediate assistance. With this ball while working out for enhance body flexibility and improve balance. Helps to lose weight and sculpture body shape.They are used for body massage and solve these problems, such as reducing muscle tension, relaxing never, ease muscle soreness etc. Specifically designed to release tight and uncomfortable muscles, increase blood circulation, relieve tension.