This is the large Cortech Tailbag, 30 liters, that is great for longer trips. You can use it in conjunction with either the Cortech Sport Saddlebags or the large Cortech Saddlebags. This bag can either fasten right to the saddlebags, or it can be used by itself with the hide-away bungee cord mounting hooks. The main compartment loads easily from the top, and there are four exterior pockets. Reflective bits help keep you visible. Available in black. blue or red.