This model is ideal for use as approach / hiking shoes in high temperatures. Height H5, 12-18cm above the shoe (classic height). Seamless around the edges, with the toe closed stitch to stitch. Extra A+ fit without tightness on the shank. It has increased breathability zones at high perspiration points, and also has a self-ventilation area in the instep zone. Asymmetric model with extra reinforcements on the toe, sole, heel and outer ankle to give you the precise density you need for each step. New sizing according to dimensions. Bmax Tetra technology to combat the main causes of blisters, such as overheating, moisture and friction. ESP 1 structure and supported by the Silver Base Layer mesh, to give it an antibacterial effect to prevent the entry and growth of microbes.