Designed in collaboration with Dusk to Dawn, the BMC Integrated Top Tube Bag provides a sleek, aero-minded storage solution that installs on the factory top tube mounts on BMC&';s URS, Roadmachine, and the new Kaius gravel bikes. This sturdy top tube bag is water resistant, super durable, and provides room for log ride essentials, a spare jacket, or enough snacks to keep you rolling. The best part? This will fit any bike with a top tube bag mount, including almost every gravel bike and even some road bikes. This is a bolt-on bag, meaning this bag requires top tube-specific mounts.