Locks that are secure enough to leave a kid’s bike on the streets of New York for a school day yet light and small enough for that kid to carry are hard to find.
The old-school U-lock is big, bulky, and nowadays allegedly somewhat easy to defeat. Modern folding locks are small and light but not super secure. And locks marketed as the ultimate in security are crazy heavy, like almost 15lbs for
Reviewed: Kryptonite Keeper 755 Lock
