With their precise fit and the materials deployed, these innovative safety boots offer a high degree of wearing comfort. The design picks up three patented elements to achieve that: firstly, the four-layer, waterproof and breathable upper material Purotex; then, there is Purofort, an outer membrane with air pockets, giving the boots lightness and thermal insulation; and finally, the metal-free StabilityFix system which provides stability for the entire foot. A slip-resistant outsole rounds off the concept.