Rolling Backpack,COOFIT Kids Backpack Wheeled Backpack School Backpack with Wheels Wear-resistant and splash-proof: This rolling backpack adopts high quality wear-resistant nylon. If liquid was splashed onto the school backpack, please use dry cloth to wipe it. And the inside belongings won't become wet even in light-rain days with the protection of the nylon fabric Large capacity: L*W*H: 32*18*46cm(12.60*7.08*18.11in). This wheeled backpack is roomy to house your laptop, clothes, A4 magazines, iPad, cell phone, books, umbrella, flask, wallet, stationeries and more Adjustable and smooth: Extendable trolley is firm and you could freely adjust its height according to your height, making it suitable for most primary school students. Universal wheels are smooth that they can roll on the ground fluently, saving energy Multifunctional: You can use the backpack with the trolley together or just use it separately. Chest strap could prevent the travel backpack from dropping while running or being collided Application: Perfect daypack for travel, school, camping, hiking and so on Push it down by your feet to make the cart flat and stand straight,when you hear a &#034;crack&#034;sound,it&#039;s done. Then simply slide the back of the backpack over the handle and attach the straps on the bottom to the carrier. This cute rolling backpack is designed so many pockets. One large main pocket for most of books,lunch bags,pencil case, ipad, binders etc. The second large pocket is designed with many small slots for small notebook, pens, or mobile phone. The third layer also contains a small compartment for some thin items. The front two small pockets for small school stuffs such as eraser,sticky notes. Ergonomic Design The school backpack is ergonomic design which in a great extend reduces children&#039;s burden of their back. Chest Buckle The front chest buckle allows the child to increase stability while carrying a backpack, reducing backpack shaking and frictional clothing. Breathable Back The kids backpack is adopted breathable fabric on the back. That feels comfortable,won&#039;t feel sultry.