The Kryptonite R4 Retracting Combination Accessory Lock

36' cable fully extended

Press the button on the right to extend the locking cable to the desired length, once locked the button on the left is used to release the cable

Cable fully extended and inserted in the receiver for locking

Cable through a helmet

Removable LED light for nightime or low light areas

Hook could be attached to a belt buckle or backpack for transporting the lock when not in use