Sunlite's Rack Pack w/Pannier gives you some much needed cargo space. It attaches to most rear rack tops quickly and easily. Individual compartments keep your gear organized and bungee cords on the top provide extra storage space. The integrated pannier bags let you carry more stuff, which is a nice touch on long trips. And, the bag is made from waterproof 600-denier polyester and uses heavy-duty zippers and reflective accents throughout.