The Hiplok is the first bike lock designed to be worn by the rider, eliminating all the fussing with frustrating frame mounts, or lugging heavy locks around in your backpack! Made of a hardened steel chain wrapped in heavy duty impact resistant nylon, the Hiplok is designed to be tougher than bike thieves. The Hiplok also features reflective logo details, increasing rider visibility. All that goodness means Hiplok will help you get where you're going safely, and keep your bike secure while you're there!