Banjo Brothers' Medium Seat Bag is perfect for carrying gear on any length ride. And if you're going big, it expands to haul even more gear. It's made from heavy-duty 840-denier nylon with a wide-mouth opening for easy access. And you've got 360 degrees of visibility with reflective accents and a rear tab for a blinkie.
Capacity: 65-81 cubic inches
Dimensions (unexpanded): 6.75 x 4 x 3 inches