One of the best things you can do for your body outside of treatment! Spikey balls are used for exercise, proprioception and self-massaging purposes. They work to enhance blood flow to specific areas of the body, therefore helping to heal and stretch those difficult to reach areas. Use on back, shoulders, gluts and hamstrings, the list goes on! At Enta we stock spikey balls in two sizes, we generally advise you to buy 2 of the same size to get the most out of the exercises.