3030-04240. SAPUEN HIGH GTX BOOTS MEN. MAMMUT. FOOTWEAR. The Sapuen High Gore-Tex® is the right choice on all types of terrain. MAMMUT® Flextron Technology™ supports the natural movement of the foot and thus a more efficient use of energy in hiking and mountaineering, while MAMMUT Georganic 3D Technology® ensures maximum comfort. All components in contact with the foot are precisely anatomically shaped, while the classic tongue construction offers easy entry. Optimized for hiking: A Vibram® rubber blend for secure grip on outdoor surfaces and a self-cleaning outsole design. The waterproof Gore-Tex® membrane guarantees a dry foot. trekking. Standard lacing. Gore-Tex Performance Comfort Footwear. Footwear Material Sole Vibram Flextron II. Double Engineered Mesh, Stretch Fabric, Velor Leather. Fairwear. Athletic. Man. 530g (UK 8.5). GORE-TEX, Vibram.