Dynafit is an athletes brand. They are committed to all ambitious ski mountaineering athletes. They constantly strive to make the athlete stronger. All materials and fabrics are carefully sourced, selected, tested and finally implemented. No product decision is made without a clear go-ahead from their athlete team. Development of each of their key product categories (boots, bindings, skis and apparel) is pursued in concert with a select team of athletes. This is the reason they lead in ski mountaineering market innovation. It may be the worlds lightest titanium bindings, a carbon reinforced boot, or the lightest ski core technology on the market. Target group: All SkiTourers and FreeTourers looking for the perfect, lightest 4-buckle boot, with slightly less rigidity than the ZZero 4C. The ZZero4 PX is the non-carbon version of the ZZero4 C. It is constructed in the same way as the carbon version, in terms of comfort, fit, and freedom of movement when ascending, and is even more forgiving in downhill. Compared with other boots on the market, this is the lightest 4-buckle Ski Touring boot in the world.