BiKASE's Grocery Pannier is a spacious and durable nylon expandable bag that easily and securely clips onto a bicycle rack (sold separately) and holds your groceries, change of clothes for commuting, and just about anything else you need to carry. It has a built-in rain cover to protect your gear that is easily removed and has carrying handles for use as a handy bag off the bike, too. It also folds flat when not in use for clearance on the bike and easy storage. This fine bag has a zip side pocket that expands for additional capacity and to keep your personal items easy to access. And there are reflective accents for safety, too.