The Tiahawk RB4444 waterproof composite-toe hiker features nylon mesh lining, waterproof membrane, a removable EVA cushion insert for lasting comfort and a dual-density EVA midsole for shock absorption. Direct attached rubber bottom with polyurethane cushion midsole and wraparound shank stabilizer. Electrical hazard protectioin. Safety rated to comply with ASTM F2413. This shoe is 100% metal-free and airport-friendly.