For over 40 years, Kryptonite has been the leader in action sports security. As the creator of the original bicycle U-lock in the bicycle security category in 1971, Kryptonite has set the standard for premium quality security products. From the early days in a VW van, to the legendary NYC stories, to the numerous prestigious awards the company has received for design and innovation, the Kryptonite story is about much more than a product. Braided steel cable has a greater density than twisted cable. Double-looped cable for use with all U-locks and padlocks.