The Tour Ultra series of shoes are made of kangaroo leather.This leather has proven to be stronger, yet more flexible than otherleathers. It is lightweight, thus you may feel like you are bowling in your house slippers! Professional Performance Kangaroo Leather Upper Kevlar Rubber Treaction Sole Dupont Kevlar Rubber Toe Cap 4 Interchangeable Solid Soles & 1 Cleated Sole 4 Interchangeable Heels Men's 6 - 12, 13, D width Soles A-Backskin Leather B-Oiled Leather C-Deerskin Leather D-Chrome Leather HeelsA-Backskin Leather B-Flat Normal C-GroovedD-Rippled