Banjo Brothers 01035 Rack Top Bag is a streamlined trunk for running errands, a picnic, or just a long day in the saddle with plenty of space for extra clothes, food or a camera. The thick padding Insulates snacks and protects your gear while out on a trail for the day. This rack top bag is 510 cubic inches in size and fits most rear-mounted bike racks. It is made with ripstop fabric on the top and with rugged ballistic fabric for the bottom panel with 360 degrees of reflective accents to keep you seen and safe. There is also a web loop for a light and inside key clip to keep your keys from dropping or getting lost.