The Back-Roller is the classic bike bag in Ortlieb’s line of waterproof bike bags. It’s a super durable and spacious pannier for your rear bike rack. Thanks to our Quick-Lock System, attaching the bag to or detaching it from your bike rack is a snap. With a pair of Back-Rollers and a pair of Sport-Rollers attached to your Lowrider Rack up front, you’ll have enough stowage space for your bike trip around the world. And if you mainly ride to and from work, then our Office-Bags or the bags in our Urban Line are certain to offer just what you need.