Here's what other sites are saying:
The Silvretta 500 binding fits a unique niche in the ski mountaineering world. Still the only binding that will fit plastic climbing boots and even some leather mountaineering boots, in addition to nearly any randonee or downhill ski boot. While not in the same league as Fritschi, Marker, or Dynafit for downhill performance, there are still users out there that need a ski mountaineering binding primarily as a transportation device. For approaches to ice climbs, humping big loads to base camps, and still offering some skiing performance, the Silvretta 500 will likely never be replaced. Silvretta 500 features: Weight:1600g DIN release values 4-10 Two position climbing aid can be actuated with ski pole Sizes (boot sole length in millimeters): S (265-315), M (295-345mm), L (320-379mm)News update: winter 2012 is the last season for availability of the Silvretta 500 in the US. Unless a new importer takes over, this binding will not be here winter next season.
A simple to use binding, the Silvretta 500 Alpine Touring Binding fits any welted boots, including mountaineering boots.
Designed to handle both ski boots and mountaineering boots, the Silvretta 500 LSV Binding is a mountaineering access binding allowing riders the ability to step in with their mountaineering boots and ride to and from climbing routes. Offering lightweight stiffness, 1 touch is all it takes to adjust the lightweight carbon rails from climbing to skiing - allowing you to pay more attention to your ride and less to your bindings.
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