Full Grain Leather Soft, breathable nylon mesh lining Dual density EVA footbed for comfort Soft, breathable nylon mesh sock lining Durable and lightweight EVA midsole T901 Durable rubber outsole + SRX for extreme slip resistance Cement Construction Technologies:SRX: Extreme Slip Resistance, ASTM, Composite Toe (CT), Electrical Hazard (EH), Slip Resistant (SR)