Ski Tour is the crampon ski mountaineers. The front is in steel, the rear in aluminum. We find the innovation in its Ski Matic 2.0 binding, which closes comfortably on the front of the ski boot (making the operation much more comfortable) and does not interfere with the rear walk/ski systems of the boots. The central bar allows adjustment. Equipped with the famous Grivel proactive Antibott both in the front and the rear. Materials/construction/technologies: steel, plastic Certification: CE EN 893, UIAA 153 Weight: 640g (22.5 oz) European Sizes: 35-46 Antibott: front and rear Binding systems: Ski-matic 2.0