... : genuine leather, 3.sole: rubber 4.shoe size: 36-46 LABOR SHOEinsulating safety boot1.upper: full grain leather,2.outsole: rubber ... ,yellow2 .anti-hit , acid and alkali resistance , oil resistance and water proof3 .optional functions : puncture-proof , anti-static , high temperature proof4 ... ,breathable function. Reasonable design,excellent quality,superior performance foot protective labor shoe