The safety-certified upper is made of top-grain cowhide leather, making it more soft, breathable, and comfortable. Dual-density construction.PUsoleTPUThe outsole is lightweight and durable, with a soft midsole that helps to distribute the stress from the outsole's ornamentation. Therefore, the outsole is very wear-resistant. It has passed the test.China ElectronicsThe outsole can be made with anti-static, anti-skid, oil-resistant, and acid-resistant functions. It all depends on you.Suitable for workers in companies involved in metal processing, glass products, shipbuilding, steel, aluminum, cement, construction, chemical, petrochemical, oilfield, automotive, electronics, construction sites, glass factories, etc.