The bag is designed to use the space inside the frame, provides a perfect balance on the bike load. Features: Designed with toughs and stretchy 360 rotating silicone phones holder, the length and width of the phones holder can be flexibly stretched to fit most 4.0''-6.5'' phones. Can easily carry small items, sucah as your keys, glasses, wallet, mini pump. Scratch resistant and practical, fashionable and personalized patterns. Waterproof, No matter what the weather, you can riding freely. Three places of velcros fixed. Stable and not shaking. You can attach your phones to it for easy riding. Specifications: Color: white, blue, black, grey, yellow (optional) Capacity: 1L Material: PC, silica gels Item size: 220 * 86.5 * 80mm / 8.7 * 3.4 * 3.1in Item weight: 250g / 8.8ounce Package size: 230 * 93 * 90mm / 9.1 * 3.7 * 3.5in Package weight: 317g / 11.2ounce Packing List: 1 * Packing Box 1 * Bicycle Tops Tube Bag 1 * Rain Cover 1 * Long Velcros 2 * Short Velcros 1 * Heads Cushion 1 * Bottom Cushion 1 * Manual