This new Hoja series "tank bag" is made from the same Vinylon fabric that Fjällräven uses for its legendary Kånken backpack. A top tube bag is ideal for carrying items like a phone, energy gels and bars, a banana, and other essentials. It's a great addition to many types of bikes! The bag can be attached using either Velcro straps or the screw holes at the bottom, provided your bike has mounting screws in the right place. - Zipper on top - Internal mesh pockets - Front cable port for electrical wiring, allowing you to carry an extra battery for a light or route a charging cable from a dynamo hub into the bag - Highly water-resistant material, though the seams are not taped This product does not contain PFAS compounds.