A. SIZE (L*W*H): 14.2*7.5*20.1 inches Weight (LB): 4.2 B. Comfortable: Made of durable water-resistant environmentally friendly polyester fabric, which can effectively prevent scratches and tears. It has an adjustable and removable aluminum alloy puller, and quiet and durable wheels, ensuring all-day comfort. There is an extra thick padded decompression handle for easy grab and hang. C. Practical: It's a two - in - one product! It can be used as a stroller or a regular backpack. If the child doesn't want to use it as a stroller, just remove the rolling platform and it becomes a regular backpack. The rolling backpack can help students reduce the burden and is beneficial to children's healthy growth. D. Large capacity: It has a multi - pocket stereo design with clear classification. It has a concise front bag, elastic mesh on both sides integrated with the main bag, which is convenient for organizing and tracking things. The personalized simple design is suitable for middle school students. E. Design: The stroller has 6 durable shaping wheels that allow for easy adaptation to various terrains and climbing stairs. The regular 2 wheels are suitable for smooth roads, which is very convenient for children going on a trip or to school with heavy things.