SecureCycleGear helmet, jacket, cable lock, heavy-duty (combo black) 4' by 1/4" braided steel cable. PVC coated for scratch protection. Pre-set, fixed 4-digit combination mechanism. No keys to loose! Light, compact, weatherproof. Convenient theft deterrence. Lockable loop has a 28 cm (11") circumference Long enough to secure helmet, jacket, backpack and luggage simultaneously