It’s constructed from durable woven nylon and is equipped with three simple Velcro straps to fit a variety of bicycles. A zippered opening provides easy access to its 0.7 liters of storage in addition to the quick-access side pockets. Two rivets in the base of the bag allow it to be bolted to bikes equipped with threaded top tube mounting holes (bolts not included). The straps are removable. Its clean look complements today’s modern bicycles while its construction is fully water resistant.