Compact Heel: This heel technology is perfect for beginners and occasional skiers due to improved release properties and is an excellent value; BioTech: During a backward twisting fall both horizontal and vertical forces are triggered on the toe of the binding. Biotech recognizes this unfavorable force combination and reliably reduces the release force; GripWalk: The sole-binding system for better walking comfort and top skiing performance. GripWalk contains of a co-polymer sole with rocker profile; Gliding AFD: All Marker bindings are equipped with a moveable AFD (anti friction device) leading to a highly precise release almost entirely unhindered by dirt, snow and ice