Made of PVC, the fitness ball is soft but at the same time very durable, with a non-slip surface perfect for your fitness exercises at home such as yoga, Pilates, or physiotherapy. Workout with Fitball allows you to improve Muscle-articular functionality, Tone, Strength, Short endurance, Flexibility, and Mobility. Each fitness ball comes with a straw for inflation, which is very simple. It is convenient to inflate and deflate the Yoga Ball according to your needs After inflating it can also be used as a play tool for children. Perfect when traveling. With its small size, it is convenient to take anywhere to use as home gym equipment With variable dimensions between 21 cm and 25 cm. It is an inflatable ball used for endurance work for Pilates and other fitness exercises on the rug. Improves Coordination and Flexibility.