1,safety shoes Upper: double layer cowhide Lining:Canberra ,outsole: PU insole: EVA mat size:36-47# 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 37 to 47 and UK size from 4 to 13 Using: Heavy Duty such as construction, mining, industry, etc