- Highly secure bicycle lock with a 3-digit combination, offering up to 1000 possible codes. Reinforced steel core and lock head provide strong protection. Keyless access means you don’t need a key to unlock. - Lightweight and portable: weighs only 80 grams, lighter than many chain locks. Easily carried in a bag, saddle bag, backpack, or mounted on the bike frame. - Safe and reliable: the 3-digit combination enables quick access while maintaining security. Reinforced steel core and lock head enhance tamper resistance. - Universal zip design: very light and adjustable with reinforced steel core inside. You can adjust the tightness of the zipper roller lock according to your needs. - Use scenarios: - Quick errands: park the bike outside a shop for a short stop and return to unlock with your code. - Daily commuting: carry it on your ride and secure at office or transit hubs without fumbling for keys. - Travel and sightseeing: take the lock along on trips for lightweight, reliable bike security at hotels, stations, or popular spots.