The Pilates Mad Exer-Soft ball 12in is a versatile fitness accessory that improves muscle tone, balance and flexibility, as well as strengthens core muscles and develops endurance and coordination. Suitable for pelvic floor exercises, this 30cm (12\'\') over ball with an anti-slip surface ensures an excellent grip and has been designed to enhance your Pilates workout. The ball also promotes relaxation and concentration, supports your back throughout a wide range of exercises and stretches, and it is beneficial for keeping a good posture.