SRM Bike Top Tube Black Zippered Accessory Bag Attaches to a bicycle's top tube, towards the stem. Large enough to hold powerbars, keys, energy gels, cards, cash, and smaller-sized electronics and phones. Fits an iPhone 5S, iPhone 5C, iPhone 5, or smaller devices. Separate zipper compartment to keep devices safe from keys or coins. Made with water resistant Nylon and polyurethane.