Designed by Achille and Pier Giacomo Castiglioni in 1957, Zanotta has been producing this iconic Italian design stool since 1970. The Mezzadro stool undeniably draws attention with its unique design. The seat, resting on a curved chrome steel rod, resembles a Fiat tractor seat, which is still in production today. It is this playful nod that earned it the nickname “tractor stool.”