Product Dimensions: The size of the tank bag is 12.2" x 22" x 22", and the weight is 8.5 lbs. The normal capacity is 50L, and when unfolded, the capacity can reach 70L. Includes a rain cover and a foldable storage bag, suitable for medium to long distance cycling needs Multi Compartment Design: The water tank bag has multiple compartments, including a dry wet separation compartment, a laptop compartment, and two independent mesh bags, making it easy to classify and store various items MOLLE System: The front, side, and top of the kettle bag are designed with MOLLE system, which can accommodate various external accessories and improve storage flexibility Multiple Carrying Methods: Depending on different usage scenarios, you can choose from various carrying methods such as backpacks, mailman bags, backpacks, or handbags to meet different usage needs Stable Framework Structure: Adopting a sturdy four point fixed design, with thick steel wires on both sides to ensure that the package does not deform or shake, providing better stability Rhinowalk Motorcycle Travel Luggage Waterproof Luggage Bags Expandable Motorcycle Tail Bag 70L with MOLLE System Trunk Rack Bag with Sissy Bar Straps-Black