... leather, 3.sole: rubber 4.shoe size: 36-46 metal toe protection shoes insulating safety boot1.upper: full grain leather,2.outsole ... proof4. meet CE EN 20345 standard Function include:CE/ AN1 protection toe safety shoes, 6KV insulating safety shoes,anti-static, anti-piercing ... -slip ,breathable function. Reasonable design,excellent quality,superior performance metal toe protection shoes