1,safety shoes Upper: double layer cowhide Lining:Canberra , outsole: PU insole: EVA mat size:38-46# outsole;anti-static 2,Certificated by CE EN 20345 S5 anti squashy,Oil, acid, electric insulation. Optional features: anti-static, anti-puncture, high temperature With a breathable, wear-resistant, non-slip, seismic, etc. 3,Size: EU size from 38 to 46 and UK size from4 to 12 Using: Heavy Duty, use onsuch asConstruction, Machinery, Mining, Oilfield, Electricity, Pharmaceutical,Chemical industry, etc