About the Altura Vortex 2 Waterproof Frame Bag A full and half size all in-one solution designed to fit most frame sizes. Bringing an element of balance to your next adventure, the Vortex 2 is the ideal solution for those strategically placed heavier items. With a lightweight welded seam construction and waterproof design, your belongings will be safe from the elements on any bike packing trip. Engineered for convenience. It comes with the universal Hook & Loop adjustable wrap mounting system ensuring it\\\'s easily mounted on any bike. An external zip pocket provides easy access and protection for those all-important personal items. Complete with an attractive hard-wearing design and reflective details for increased visibility Key Features Waterproof design. Reflective details. External zip pocket. Hook and Loop wrap variable mounting system. Luggage Buying Guide