With a flexible design that lets you lock your bike onto virtually anything, the Litelok Flexi-U Silver is an updated and upgraded U-Lock boasting patented technologies. The Patented Boaflexicore strap offers test-proven security while its patent-pending downward ‘line of sight’ locking mechanism and hardened aerospace-grade steel lock casing will make a bike thief think twice before messing with your ride. Available in 2 sizes: Regular (640g), Large (730g).