"Corpo d'aria" ("Body of Air"; plural "Corpi d'aria") is an artist's multiple by the Italian artist Piero Manzoni. Manufactured between October 1959 and March 1960, the pieces are a box, a tripod base, deflated balloon and a mouthpiece. 45 copies were made and sold at 30,000 lire each. Originally, any buyer could ask Manzoni to inflate the balloon himself, but would be charged an extra Deutschmark for every litre of air expanded. When fully expanded, the balloons measured 80 cm in diameter.