Nylon and Synthetic Leather Upper. Removable Anti-Fatigue Polyurethane Insole. EVA Midsole for Maximum Comfort. Highly Durable, Slip- and Oil- Resistant Stabilizer Outsole. No Exposed Metal to Meet Scratch Resistant Workplace Requirement. 100% Metal Free. 100% Man-Made Components. Meets or Exceeds ASTM 2413-11 SD Ratings.