The N1840 features a full grain nubuc waterproof leather upper,composite safety toe cap,removable anti-fatigue polyurethane insole,EVA midsole for maximum comfort,highly durable,slip- and oil- resistant stabilizer outsole,seam sealed waterproof construction,and no exposed metal to meet scratch resistant workplace requirements. 100% metal free. Meets or exceeds ASTM 2413-11 impact/compression and SD ratingsAdditional InfoSafety,Removable Insoles,Waterproof,Slip-Resistant (Non-Skid),Safety Toe,ASTM