Double injection In order to provide effective cushioning and better comfort, the sole is coupled to the upper material in a technically demanding injection process. The upper boot is used in a specially developed form. Then several layers of PU foam filling are poured. The sole and upper material are connected to each other. Non-slip: the soles with the anti-slip marking meet the highest non-slip standards. This mainly depends on the design and rubber mix of the sole and provides a stable base in various everyday situations. The non-slip soles provide optimal non-slip protection on smooth, wet and oily surfaces as well as a good grip on the floor. Closed lightweight hooks: allow quick lacing and meet the requirements of jumping shoes. Outer material: extra robust 1.4-1.6 mm hydrophobic natural leather and Cordura ensure durability in difficult conditions. Midsole: Our patented Monowrap PU construction keeps this shoe lightweight while providing maximum support. This unique frame construction also features a special midsole to protect against abrasion when descending double ropes. Waterproof Gore-Tex lining: so special, it is patented. LOWA uses a patented, durable method for a smooth, seamless waterproof lining that reduces hot spots, promotes better fit and fewer air bubbles. Your feet stay dry and pleasantly warm even in extremely cold and humid conditions.