COOFIT Rolling Backpack Kids School Backpack with Wheels Laptop Backpack 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 Covers failures due to structural defects, stains, rips or tears, seam separation, loss of latex backing and more. No deductibles or hidden fees. Shipping included on all repairs. Fully transferable. Easy claims process online 24/7. If we can't fix it, we will send you an Amazon e-Card reimbursement for your product purchase price. Plan term and select coverage begins date of purchase and is inclusive of the manufacturer's warranty. All other coverage begins after the manufacturer's warranty expires. Plan is fully refunded if canceled within 30 days. Plan contract will be emailed from Asurion within 24 hours of purchase. This will not ship with your product.