The Xtracycle Lock Pocket includes a 5.5''' U-Lock holster perfect for easy and simple lock storage. Also, a The Lock Pocket can attach to cargo bags or right on the Xtracycle rails. The roomy interior also features a small sewn in key clip to keep track of your keys during your trip. The Xtracycle LockPocket is the glove box on your new cargo. If you need a small and safe place that can be easily removed and carried, this accessory is a must.