A set of three spiky porcupine massage balls of varying sizes, the small one is ideal for relieving tension in hands, feet, and forearms, the medium, for biceps, necks and calves, and the largest for backs, thighs and glutes. These versatile spiky balls have many uses, including deep tissue massage, and sensory stimulation for adults and kids with autism or sensory disorders, being brightly coloured and physically stimulating to touch, they\'re also a great stress ball for the office! For massage purposes the balls can be rolled under the feet to improve circulation, release calf muscle tension, and strengthen ankle joints. Get a friend to roll the ball against tight spots of your body, or do it yourself by standing against a wall with the ball in between. 3 pack of spiky massage ballsRelieve tension in musclesVersatile, can used for muscle relief, sensory stimulation in Autism, trigger point therapy, Myofascial, Plantar Fasciitis, yoga, reflexology, stress ball, tight muscle recovery.Ball Sizes 6cm, 7cm, 10cm (Approx)