Feature: 1. LARGE CAPACITY: The backpack is designed with a stylish LED bar screen. Spacious enough to accommodate standard half and full helmets. The backpack measures 32 x 19.5 x 44.5 cm 2. APP CONTROL: You can choose from hundreds of cool GIFs using the for LOY EYES APP, and LED backpack enhances your safety and style while walking or biking at night 3. STRONG MATERIAL: The LED backpack is made of hardshell ABS, PC and 1680 PVC material to protect against scratches and collision. The back is designed with cotton breathable material for more comfort when wearing 4. COOL GIFT: The motorcycle LED backpack comes with a programmable screen and is a great gift to yourself or others on special occasion like Xmas, birthdays or Valentine Day 5. UNIQUE AND EYE ATTRACTION: The backpack seamlessly integrates mobile LEDs into daily life, allowing people to express their personality while enjoying convenient communication. Whether is adding vibrant color to your surroundings or creating an eye catching display, backpacks can bring a touch of uniqueness to the way you connect with the world Specification: Item Type: LED Backpack Material: Cotton, ABS, PC, 1680PVC Download APP: For LOY EYES APP Power Supply: Power bank powered(not included) Size: Approx. 32 x 19.5 x 44.5cm / 12.6 x 7.7 x 17.5in. Package List: 1 x LED Backpack 1 x User Manual Note: This LED backpack requires a mobile power source to use, but is not included in the product. Therefore, you need to provide your own mobile power supply.