Safety boots with protection classes O4, S3, S4 and S5. The safety boots are made of high quality materials - natural leather, PVC or a special blend of PVC and nitrile rubber. The lining is in accordance with the base material of the upper part - for leather boots - thermal insulating, hydrophilic inner lining, for PVC-Nitrile - washable polyester lining. Double density polyurethane sole or natural rubber outsole - resistant to 300oC for leather boots or anti-static and anti-slip soles, resistant to hydrocarbon and mineral oils - for PVC-Nitrile boots. Protective toe caps and piercing resistant inserts made of steel or composite materials.