Where previous models were strictly ISO 5355 Alpine sole devices, the new version lets you use pretty much any type of adult standard sole. This means you can use your touring boot or your alpine boot on the same pair of skis (provided you have adequate length adjustment and the touring boot has ISO 9523 toe and heel lugs). The other Warden characteristics that make it a favorite among powder and side-country skiers remain the same, namely dependability and positive, low-effort step in action.