Easy to learn a good partner, zero burden / large capacity / strong durability. The thick bottom plate is protected and fixed with large screws, so that the bottom of the schoolbag is not easy to wear and more durable. The schoolbag has soaked feet, and the bottom of the schoolbag will not lean forward or tilt. The new pull rod is made of aluminum alloy, which is not easy to break, and can bear more weight without pressure. The 2-speed adjustment is suitable for children of different heights. The wheels are reinforced with triangular supports, which have better wear resistance and temperature resistance during use. The straps can be hidden for easy towing and protection from dirt. High-bright TC reflective strips make it safer to walk at night. The shoulder reflective strips are designed to effectively warn passing vehicles in smog/rainy days/nights, so that mothers have less to worry about. The simple front pocket, subdivided middle belt, elastic net pockets on both sides, and the integrated main pocket form a large-capacity schoolbag.