The Fitness Mad 12 inch Exer-Soft Ball is an excellent ball for different types of exercises. Ideal for pelvic floor exercises, the ball will enhance your Pilates workout and help develop strength, endurance and concentration as well as promoting relaxation and coordination. The balls are anti-slip offering excellent grip. Ball size is down to preference though its common to have all three sizes for greater diversity. Features and Specifications: Soft exercise ball Material – DINP PVC (Latex free) Colour – Graphite only Great for pilates, yoga and aerobics Easy to use and inflate Safety – Factory tested as burst resistant at 100kg Dimension – 12inch (30cm) diameter Safety Warning: To be used for fitness purposes only.