Robust security for cyclists This bike combination lock uses a sturdy chain design to deter theft and unauthorized access, providing reliable protection for your bike wherever you park. Wearresistant construction Built to withstand harsh weather and frequent use. The wearresistant chain is covered with a protective fabric sleeve to minimize potential damage to your bike frame and to extend the life of the lock. Keyless convenience Features a combination lock mechanism that lets you operate without keys. Eliminate the hassle of carrying keys while keeping your bike secure. Flexible and easy to use The chain's generous length makes it easy to attach to a variety of fixed objects such as brackets, posts, or fences, offering versatile security for the frame and wheels. Specifications and attributes Material: wearresistant chain with a protective fabric sleeve Lock type: combination mechanism Design focus: weather resistance, durability, and framefriendly protection Compatibility: suitable for securing most standard bikes to common fixed objects Performance: reliable keyless operation and versatile attachment options Practical use scenarios City parking: secure a bike at racks, posts, or fences in urban environments by looping the chain through the frame and wheel for a quick, worry lock. Gym, campus, or public facilities: leave your bike safely behind while you focus on activities, using a combination to avoid carrying keys. Travel and errands: when stopping at shops or transit hubs, use the long, flexible chain to secure your bike to sturdy fixtures while you attend to errands.