An apparatus for automatically adjusting tension on retention member to hold multiple objects together. Examples include using retention apparatus to obtain optimal fit and use of a human wearable item such as article of footwear. Sensors may be used to sense changes in movement of the article of footwear, of the person wearing it, or of a third object such as a vehicle carrying the person. A retention member may surround at least a portion of the objects, and an actuator may be included that automatically rotates a rotating member such as a gear or pulley that may be coupled to the retention member. The rotating member may be configured to automatically adjust tension on the retention member many times per second based on control signals from control logic responsive to the sensors.

The present disclosure relates to a heel unit for a touring ski binding. In some embodiments, the heel unit, which may include a ski brake lock, may be moved into an entry position, an intermediate position, and a climbing position. In some embodiments, the ski brake lock may include a linearly displaceable, spring-loaded actuating rod connected to the ski brake and a slotted guide located in a heel clamp. The slotted guide may include a locking element aligned along the vertical axis of rotation of the holding body, rotating with the holding body and moving along the axis of rotation, spring-loaded in the direction of the ski plane.

The present disclosure relates to a heel unit for a touring ski binding. In some embodiments, the heel unit, which may include a ski brake lock, may be moved into an entry position, an intermediate position, and a climbing position. In some embodiments, the ski brake lock may include a linearly displaceable, spring-loaded actuating rod connected to the ski brake and a slotted guide located in a heel clamp. The slotted guide may include a locking element aligned along the vertical axis of rotation of the holding body, rotating with the holding body and moving along the axis of rotation, spring-loaded in the direction of the ski plane.