For over 40 years, Kryptonite has been the leader in action sports security. As the creator of the original bicycle u-lock in and the bicycle security category in 1971, Kryptonite has set the standard for premium quality security products. Kryptonite's innovative products are developed through a passion for creating the best security in the world. Their locks come in a range of sizes, and are made from only the sturdiest materials. They're anti-rattle bumpers reduce noise when riding, and a vinyl coating protects your bike's paintwork from scratches and bumps. A Kyrptonite lock is a must for any rider looking for the highest protection.