Ortlieb's Vario is a pannier you can carry on your back. Or is it a backpack that can attach to a rack? Either way it's an awesomely versatile bag. It's made from Ortlieb's signature waterproof material to keep your gear from getting wet even in the worst weather and the roll-top closure allows for quick access and a flexible packing height. The backpack system has two shoulder straps, a waist belt, and a chest strap to keep the bag secure and a foam back pad adds comfort while improving ventilation. The backpack straps stow in the front pocket exposing the QL3 mounting system. A removable inner pocket helps keep things organized making this an ideal pack for active students, travelers, or professionals.