The models of TOP WINTER & FIERY line guarantee safe and protected steps in any climatic condition as they are capable of maintaining the thermal insulation of the foot both in extremely cold environments and whenever the operator works in contact with very hot surfaces; moreover, these safety shoes are also the ideal choice for all those who work in the presence of electrical energy sources (electrical hazards). From the cooperation with Vibram, the world-leading manufacturer of high-performance soles, three types of soles have been developed having one main feature in common: the midsole is made of low-density polyurethane while the tread is in nitrile rubber.  The WINTER sole, thanks to the VIBRAM TC4+ compound with which the tread is made, creates and maximizes grip when in contact with icy surfaces, ensuring the best resistance to slipping. The HRO sole, by virtue of a specific component inside the compound, guarantees heat resistance by contact up to 300°C. The DIELECTRIC sole, on the other hand, is capable of discharging into the ground any electric shocks (up to 20,000 volts) with which the user may come into contact.