Slip resistant rubber outsole exceeds ASTM F2913-19 standards for slip resistance ASTM F2413-18 approved composite safety toe EVA midsole molded with nylon shank for superior support Quick drying polyester mesh and microfiber PU upper No stitch construction in forefoot area to create light weight and flexibility Airport friendly construction UFit rapid-lacing system for a faster, more snug fit Lightweight molded dual density EVA midsole with shock absorption zone for fatigue control Gusseted tongue to keep dirt and debris out Custom-molded thermoplastic heel counter and toe box for instant comfort and protection Stationary Achilles Cushion provides increased comfort and stability in the collar 22.5 Oz. (632g)