The Hiplok is the world"s first bicycle lock developed specifically to be worn on the body, seriously strong with a hardened steel chain at its core * Hiploks are fully adjustable - one size fits 26" to 44" waist, The padlock uses a hardened shackle resistant to bolt croppers and hacksaw attacks * With Hiplok there"s no need to attach or hang a lock to your bike, meaning you don"t spoil the clean lines of your machine, or scratch your frame * The locking mechanism uses a disc tumbler system which is almost impossible to pick * The lock body is stainless steel with a molded case of super tough nylon, The chain is case hardened steel alloy