The 7cm Fitness Physiotherapy PVC Ball is a hard spiked massage ball designed to relieve plantar fasciitis pain. Made from durable PVC material, this exercise ball is perfect for gym and training activities. Originating from China, this ball is a versatile tool for achieving fitness goals and improving muscle mobility. Its compact size makes it easy to use at home or on the go, providing a convenient way to massage and strengthen various muscle groups.