Password design improves the security to prevent being stolen. Stretchable cable design meets different length needs. Compact and lightweight design makes it easy to store in bag or wrap around the bike. Plastic outer design protects your bike frame from scratching. It is constructed of zinc alloy material. The stretch length is up to 150cm. It is suitable for MTB, road bikes. Item Name: Bike Helmet Lock Material: Zinc Alloy Features: Flexible, Password Design, Anti Rust Size Details: Stretch Length: Up To 150cm/59.1" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bike Helmet Lock