The SAPUEN HIGH GORE-TEX® is the correct choice on all types of land.Mammut® Flextron Technology ™ supports natural foot movement and, therefore, a more efficient use of energy in hiking and mountaineering, while Mammut Georganic 3D Technology technology guarantees maximum comfort.All components in contact with the foot have a high precision anatomical form, while the classic construction of the tongue offers an easy entrance.Optimized for hiking:A vibram® rubber mix for a secure grip on outer surfaces and a sole design that allows self-cleaning.Gore-Tex® waterproof membrane guarantees a dry foot.