Full Grain Leather - PU footbed - Nylon Mesh + NXT footbed cover - Revive Tech: Engineered comfort midsole - Nylon shank - Strobel construction - Lightweight cushioning that is durable and - provides more energy return than other foams - Composite Safety Toes are rated ASTM F2413-11 and are nonmetallic - Electrical hazard footwear is rated ASTM F2413-11 1/75 - Non Metallic styles exceed ASTM standards for safety but are entirely free - of metal - Slip Resistant soles reduces the risk of slips and falls