Full Grain Nubuc Waterproof Leather Upper. Removable Anti-Fatigue Polyurethane Insole. EVA Midsole for Maximum Comfort. Highly Durable, Slip- and Oil- Resistant Stabilizer Outsole. Seam Sealed Waterproof Construction. No Exposed Metal to Meet Scratch Resistant Workplace Requirements. 100% Metal Free. Meets or Exceeds ASTM 2413-11 SD Ratings.