These are protective slip-on shoes designed for comfortable long-term work. The upper is made of high-quality full-grain leather. Protection: The shoes feature a safety toe for toe protection. The rubber outsole is slip-resistant and oil-resistant, leaving no marks on the floor (non-marking). They have electrical hazard protection (EH). The model has a mesh lining for breathability and a soft insole with open pores for cushioning. Please feel free to ask any questions.