Aimont Stealther Size range 38-47 (5-12) metal free yes anti-static shoe yes upper Full grain leather, waterproof toe-cap Light-plus Composite material 200joule. Anti-magnetic. Anti-corrosive. Anti-allergic Does not conduct heat or cold. anti-perforation midsole Flex System in Composite Material. Anti-magnetic, does not conduct heat or cold. lining Ultra breathable 3-dimensional. insole Vento plus multi-perforated ergonomic foot-bed. Breathable, Anatomical and Anti-static. sole VIBRAM 300 degrees heat resistant. Lighter and more durable than rubber.