LEGE Multi-fonction Demountable Kids Student Hand Trolley Wheeled Bag School Bacpack with Comfortable Shoulder Support 14 inch Laptop A4 Files Super Lightweight This Trolley bag is very suitable for student Durable and noiseless wheels for stable and controlled motion According to scientific report,it mentions that it is in favour of cervical vertebra development while the weight of bag is less than 15% of your child's weight.The maximum weight capacity of trolly bag is 22(pounds) The particularly selected is healthy, environment-friendly,High Quality Nylon-made; composite waterproof fabric, more improved in water-proof, wear-resistance, and aging-resistance than ordinary canvas bag on the market If your kids need to carry a lot of books,Use our product to ease the pressure on the shoulder,such as 14inch laptop,cloths,A4 Books