Features Integrated ankle reinforcements Toe & heel reinforcement Shin & ankle reinforcement made from sturdy plastic with ventilation inserts Gearshift reinforcement 2 side zippers with leather cover for comfortable entry Comfort padding on heel & instep Breathable mesh lining Material PU coated cowhide Membrane HIPORA® climate membrane Waterproof, windproof & breathable Shaft height Approx. 21 cm (size 44) Sole Robust, cut-resistant rubber sole Oil & petrol resistant HIPORA® Hipora is a waterproof & breathable fabric most commonly used as an insole in winter, motorcycle & bicycle boots. Hipora consists of a three-layer microporous silicone coating. The first layer prevents the penetration of water. The second layer is a honeycomb structure that allows moisture to pass through, thus displacing it through the first layer. The third layer is very dense & provides additional protection from water. This is the layer that is closest to the skin.