A fastening device that provides for ease of alignment and operation. The fastening device has a first locking body having a first magnet, a second locking body having a second magnet, a slider body slidably connected to a first zipper track, the first locking body affixed to the first zipper track, and the second locking body affixed to a second zipper track. The first and second locking bodies reversibly form a single element while in use through the attractive force of the first and second magnets.