Made from tough water-resistant Cordura nylon fabric, this bag is designed with stiffened sides and built-in Velcro straps for a sturdy and secure fit when on the bike, which also doubles as a shoulder strap when you are off the bike. The main compartment has a full-length zip allowing easy access. Additional features include glove-friendly zip pulls and a reflective strip that wraps around the entire bag for night-time visibility. The simple strap system fixes the bag securely to the rack and the seat post. This bag allows you to fold the bike with the bag still attached by simply unclipping the buckle, flipping the bag through 180 degrees, and clipping it onto the main frame.