SIDEKICK is a superlight, keyed, compact bike lock with a 12mm double shackle design that is silicone-coated so you won't scratch your paint. SIDEKICK is your perfect ride companion. Watch Video. Winner of Gear Patrol's Best Lightweight Bike Lock. - LIGHTWEIGHT: Weighs only 1.65lbs (750g). Compare vs. other U-locks. - COMPACT: Fits easy in bag or pack. Opening size is 2.75" x 5.75" (7cm x 14.5cm) - capable of locking single tube to post. - NON-MARRING: Silicone-coated lock body. Won't scratch your bike frame. Black, Orange, and special-edition Blue. - STRONG: Double-shackle 12mm hardened steel with anti-rotation deadbolt. - KEYED: Three keys included in case you lose 'em!