1、Waterproof Process: Utilizes seamless welding and waterproof TPU fabric material to prevents rainwater infiltration effectively. 2、Belt Fixing: Installed securely with belts on the frame for easy installation, quick release, and effortless removal. 3、Screw Fastening: The bag is firmly secured with screws, ensuring easy dismantling and fastening without any shaking. 4、Wind-breaking Shape: Designed with a wind-breaking shape to prevents interference with the rider's legs and reduce wind resistance. 5、Lightweight and Wear-Resistant: Features internal hardshell support for a three-dimensional and sturdy structure, and with a net weight of about 152g. Color: orange, black (optional) Material: TPU Item size: 220 * 58 * 55mm / 8.7 * 2.3 * 2.2in Item weight: 152g / 5.4ounce Package size: 230 * 60 * 60mm / 9.1 * 2.4 * 2.4in Package weight: 165g / 5.8ounce 1 * Bike Bag 3 * Fixing Belts 4 * Screws 8 * Spacers