Get the capacity of a rack trunk without the need of a rack with the Waterproof Saddle Trunk. This bag has tons of space 400 cu. inches and since it attaches using the rails of your saddle and seatpost no rear rack is necessary. An interior aluminum strut and stiff HDPE hull give the bag shape so it doesn’t get all saggy when loaded up and its waterproof fabric keeps your valuables dry during wet weather. Completing the package is an exterior pocket to keep things like keys closer at hand plus webbing loops for a light and to strap down a jacket or tool bag easily accomplished with a spare toe strap.