Heavy-Duty Folding Bicycle Chain Lock — 3 Keys, Mount & Glow

Construction and materials
This folding chain lock is built from high-grade zinc alloy with ABS housings for the joints and a robust locking core. The protective exterior finish and solid link design are intended to resist cutting and tampering during everyday use. When folded the unit measures about 5 cm by 7 cm; when extended it gives roughly 31 inches of reach. Total weight is approximately 575 g.

Glow and tracking features
A solar-charged phosphorescent surface stores daylight and emits a soft glow at night so you can locate and thread the lock in low-light conditions. There is an integrated compartment sized for an Apple AirTag (AirTag not included), allowing you to pair a tracker and use location services as an additional theft-deterrent or recovery aid.

Protection and finish
The lock core and joints are coated in a rubberized paint to prevent scratching the bike frame and to reduce rattling while riding. The finish is water-resistant to help withstand rain and daily wear; the foldable links help minimize exposed metal that could chip paint or make noise.

What’s included
The package ships with the folding lock itself, three precision-cut stainless steel keys (each key keyed to a unique serial), and a mounting bracket with hardware that fastens to most bike frames or scooters for transport. Replacement keys can be ordered using the serial if a key is lost.

Usage and compatibility
The folding design is compact enough to stow in a saddlebag, top-tube pouch or backpack, and the mounting bracket keeps it handy during rides. It’s designed to fit a wide range of two- and three-wheelers, including mountain bikes, road bikes, e-bikes, folding bikes and many scooters. To use, unfold the links, loop around an immovable object and into the lock body, then engage the key mechanism.

Everyday considerations
This lock balances portability and security with convenience features like glow-in-the-dark material and a tracker slot. Keep in mind it is intended as a strong deterrent for casual thieves and for everyday stops; users who need maximum resistance against determined attacks should consider pairing it with additional security measures.