The first gymnastic ball produced in the world! Its use started in Switzerland in the 60s, so that it was incorrectly called the “Swiss ball” , the same name used nowadays. Ideal for a wide range of uses, from gymnastics to rehabilitation, fitness to aerobics, dance, sport, therapy .. Our Original Pezzi® Gymnastik Ball are indicated as substitute of the chair, at home, school, office, providing a correct posture. Available in 4 different diameters from 42 to 75 cm.(16.5 in. to 29.5 in.) and bright colours, are made of durable and elastic plastic material. Each ball supplied in box is provided with a complete exercises guidebook in 6 languages.