Exclusive and Comfortable Runner from Philipp Plein Skeleton Collection featuring in Python “Black Viper”.UPPER #1: 100% PYTHON LEATHER | UPPER #2: 100% CALF LEATHER | LINING #1: 100% COW LEATHER | LINING #2: 100% SHEEP LEATHER | INSERT #1: 100% ZINC (ZAMAK®) | INSOLE #1: 100% THERMOPLASTIC POLYURETHANE (TPU) | OUTSOLE #1: 100% THERMOPLASTIC POLYURETHANE (TPU)