Convertible toe Save 300 g per foot for the uphill Anti Ice Rail Use the metal rail to scratch off ice and snow below your boot sole Sole.IDtechnology 100 % boot -compatibility: Alpine, Touring and GripWalk soles Auto Quad Lock Technology 4-point self locking toe part Lock & Walk Brake Including neutral walking mode and 10° climbing aid Inter Pivot 3 Freeride Heel The newest generation; DIN 6-16 (Duke PT 16 only) Magnesium parts Magnesium heel housing for superior stability & light weight (Duke PT 16 only) Marker Duke PT 16 Ski Bindings