The AeroGuard utilizes our proven AeroForm Technology to bring a revolutionary level of comfort to hardcore work environments. With a waterproof neoprene core and an ultra-durable AeroForm polyurethane shell, the AeroGuard delivers reliable protection in harsh conditions. Unrivaled underfoot comfort is built into the boot thanks to a thick polyurethane midsole and footbed that provide excellent shock-absorption and cushioning. CSA and ASTM certified, safety is a priority for the AeroGuard with its composite safety toe, integrated metatarsal guard, non-metallic puncture-resistant midsole, enhanced ankle protection and 360 degree Impact Shield protection. There's never been an industrial strength work boot like this.