The Topeak MidLoader 3L (Black) utilizes the unused space inside your bike frame to store essential tools, snacks, or gear while maintaining perfect balance and aerodynamics. Built from lightweight, highly water-resistant polyethylene and nylon, it’s engineered for off-road and long-distance touring. Two water-resistant zippers on either side provide quick access to your items while keeping dirt and moisture out. Easy hook and loop fasteners make mounting and removal effortless, ensuring a snug fit that doesn’t interfere with pedaling.