The Gore-Tex membrane used in the Alphacross 5 GTX protects your feet from splashes from undergrowth and puddles. The substantial drop, or the height difference between the heel and forefoot, provides even beginner runners with the ability to direct more power forward rather than upward. The cushioning is right in the middle of Salomon's scale: a good balance between a responsive feel and softness. The Alphacross is best at home in hiking and on walks, but can also be used for trail running. - Salomons typical slightly narrow fit - Fuze Foam midsole for shock absorption - Aggressive 6.5 mm tread pattern - Sole thickness: 32 mm at the heel and 21 mm at the front, with an 11 mm drop - Lightweight toe cap