Rolling Backpack, COOFIT Wheeled Backpack Kids Rolling Backpack With Wheels (Black) WATERPROOF & STURDY: This rolling backpack is made of high quality and durable nylon, which is waterproof so that it can protect your belongings such as laptop in it from rain. The trolley is made of sturdy and polished metal for carrying heavy things LARGE CAPACITY: Backpack: L*W*H: 32*13*45cm(12.60*5.12*17.72in). This wheeled backpack with several pockets is large enough to organize your laptop, notebooks, cell phone, umbrella, books, A4 magazines, clothes and much more SHOCK-ABSORBENT: Inside pocket of this rolling backpack adopts soft and comfortable cotton, reducing shock and protecting your laptop during moving BACKPACK & ROLLING BACKPACK: This wheeled backpack is detachable and foldable, won't occupy too much room if you don't need to use it. You can use it as both backpack and rolling backpack RAIN COVER IS INCLUDED: The back pocket of the rolling backpack are designed for storing rain-proof cover. No need to forget taking it when it suddenly rains