Since 1971, Kryptonite has had one overarching goal: To secure your bike against theft. Much has happened since 1971, but for Kryptonite, everything is the same and the product has undergone improvements over the years without changing purpose or position as the best bike lock the world has yet seen. Kryptonite invented the famous "30 days and 30 nights" phrase by promising their lock could keep a bicycle locked to a lamppost in central New York. Their mission was successful and since then no one has been in doubt about the quality behind the famous Kyptonite bike lock.
Kryptonite is today considered to be the best lock on the market for the price.