Men's Label Rex sport calf leather green sneakers by PIRELLI PZERO. This contemporary design features dark and light green panels, rounded toe and rubber grip sole. PIRELLI PZERO is internationally renowned for supporting the world of tyres, but has been synonymous with fashion for more than a century. Ever since the annual PIRELLI trade calendar was introduced in 1964, featuring the most striking models of the day wearing beautiful clothing, the brand has been associated with style and elegance.