The Rottefella Xplore BC Offtrack Binding are high-performance cross country bindings, and they are designed to withstand harsh backcountry skiing conditions. What makes them different from classic or skate bindings is their width and weight - backcountry bindings are wider and heavier than other cross country bindings. This is to provide better support in powder snow and enhance control over heavy skis. As for boot compatibility, these bindings fit Rottefella Xplore BC boots.