Serfas Speed Bag w/Quick-Release Mount (Medium)

Serfas' Speed Bag has such a sleek design you won't even notice it's there, and it totes your ride essentials with ease. It features a water-resistant shell, an internal pocket, a key ring, and reflective details and a taillight mount (taillight sold separately). This fine bag attaches easily via its handy quick-release mount and Velcro stabilizing strap and it also expands for more carrying capacity.