The Goose Lock 4204K chain lock is designed for security and convenience, featuring an IvyTex outer sheath, an inner foam-padded lining, and specially hardened 4mm steel chain links. Its shape-retaining internal spine ensures flexibility while maintaining form. Together, these elements create the GOOSE LOCK—a durable lock that can be easily wrapped around your bike frame, handlebars, or seat post without the need for a bracket.