1Durable Material: Made of 3D hardcore waterproof material, ensuring its durability and resistance to water. It can withstand outdoor conditions and protect your belongings. 2Customizable LED screen: Features a programmable LED screen with 46x80 pixel image animation support, could display Diy texts, images, GIFs, and animations, unique and eye catching. 3Bluetooth App Control: With Bluetooth connectivity and an accompanying app, you can easily control the LED display screen, enjoy convenient control of the LED backpack. 4Multifunctional: 43x34.5x22CM in size, can be used as a laptop bag or a helmet bag, with multiple independent compartments to store cosmetics, tissues, keys, textbooks and more. 5Wide Application: Designed with a fashionable and cool style, makes you stand out and enhances your riding experience, suitable for cycling, hiking, traveling, and business trips.