Ultra technical, waterproof boot for high altitude mountaineering and for working outdoors in cold temperatures. Quick and easy to fit, it features quick-drying materials. The rear flex zone facilitates walking on all types of terrain, even on uneven terrain. The weather protection is maximized thanks to the waterproof Cordura® gaiter with heat sealed zipper and Velcro cover and the inner waterproof membrane. Volume and weight are reduced to a minimum: the protective edge is made of a super lightweight material, PU TechLite™ while the midsole is made from insulating carbon honey-comb tech 3 mm. G5 is the ideal product for prolonged stays in both static and dynamic winter mountain environments and combines the thermal insulation characteristics of a double shell boot to those of lightness and containment of volumes of a single shell boot. Gimme Five, G5.