No# 2231 Full grain leather / 1200 denier nylon upper with polishable heel and toe Composite safety toe exceeds the CSA CAN/CSA Z195-02 standards and withstands impacts up to 200 Joules Electric shock resistance certified to CSA Omega rating standard Foam-padded collar and tongue for protection and increased breathability Durable brass alloy, rust proof hardware Moisture-wicking lining with AEGIS antimicrobial protection Removable custom fit EVA insole with PORON® performance cushioning pads Custom-molded phylon EVA midsole for lightweight comfort and cradled support Airport-friendly nylon shank for lightweight support and fatigue control LENZI® non-metallic L-Protection® anti-penetration board keeps your feet safe from puncture dangers with pre-treated ceramic and high tenacity fibers Custom-molded thermoplastic heel counter and toe box for instant comfort and lateral support Stitched toe and heel for durability and increased service life Board-lasted Strobel construction for athletic running shoe comfort Chase outsole: Slip- and oil-resistant, non-marking rubber with siping, exceeds the ASTM F489-96 test for slip resistance