Size range 35-47 (2.5-12) metal free anti-static shoe upper Waterproof leather 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 3D made of a material with 3 layers. Ultra breathable insole Vento-plus multi perforated ergonomic foot-bed. Breathable, Anatomical and Anti-static. sole Dual density PU. Anti-slip. Anti-abrasion. Multi level shock absorption.