Feature●Material: trolley made of aluminium alloy and PP, rust-proof, lightweight, high-strength materials. PP plastic is suitable for human contact and recyclable. The wheels are made of high quality rubber, strong and durable.●Recommended load: 20 kg or less. It can carry school bags stably and makes it easier for children to school because the back is relieved and thus possible posture damage are avoided.●Functional and practical: suitable for most school bags, it is a practical gift for students.●【Size】Open dimensions: 38 x 25 x 84 cm, folded dimensions: 38 x 25 x 50 cm.●Installation: Attach the backpack handle around the hook; place the backpack on the base of the trolley and youre done.Description