These balls are perfectly adaptable even to the most strenuous uses. Ideal for a wide range of uses, from gymnastics to rehabilitation, fitness to aerobics, dance, sport, therapy... During the execution, the user can sustain quite heavy weights noting at the same time that the balls do not deform in shape and maintain their dynamic characteristics: such distinguishes our product from the traditional fitness bench. These balls are made of the exclusive flexton silpower® (patent) material developed by our company and if used in accordance with the requirements contained in the instructions and warnings manual, they slowly deflate in the event of accidental damage caused by small tears or punctures, thus providing a safety factor to the user. Available in grey metallic colour and in 3 sizes (53 - 65 and 75 cm diameters), they offer a pleasantly soft and velvety surface. Furthermore, cuts (up to 5 mm.) or small holes , can be repaired with the specially designed "Fixa-Kit".