RockyMounts Maddox U-Lock Black, One Size

Whether you're commuting to work or pedaling around campus, use the RockyMounts Maddox U-Lock to keep your bike in place when you can't keep your eyes on it. While you're riding, the Maddox sits in its seatpost mount, and the mount even has a push button that pops out so you know it's secure before you start moving. A coating protects your frame from dings and scratches, and the lock interface is so easy to use that you'll have no deterrent from securing your bike, even for quick stops.