Capacity: 15.7 X 11.8 X 3.9Inch / 40*30*10cm (H+L+W). Using 600D durable high-quality polyester, lightweight, and easy to clean. Durable lightweight backpack with a smooth zipper.USB 2.0 Charging Port Design: Built-in USB Cable. Use It To Connect The Power Bank, Then Connect Your Phone With Original USB Cable To The USB Port, You Could Charge Your Phone Conveniently. Function: Vivid 3d Printing Design, Eye-Catching, And Impressive. Enough To Hold A Laptop, You Can Put An Umbrella, Water Cup, Camera, Shaving Equipment, Clothing, Etc.Comfortable to Carry: backpack with air cushion belt carrying system and thicken breathable strap. The adjustable padded shoulder straps offer enough support and comfort.Great Choice for School--It's a fashionable and personalized backpack that can fit many occasions. It's suitable for school, office, meetings, outdoor, holiday vacation travel, etc.