1. Lightweight and waterproof design, using PC fabric, box cartoon shape, 30D cartoon characters before and after. This bag is light and weighs only 3.2 kg, so there is plenty of room for all the necessities.2. Smooth and explosion-proof zipper, smooth and durable, with 3500 consecutive pull-in tests for tougher pull.3. Ideal for vacations, weekend getaways and overnight stays, this pack features 2 easy sliding wheels and a retractable telescopic/adjustable trolley handle for children.4. Some design front pockets are perfect for items that need to move as fast as a boarding pass, or once you leave the registration lounge, you may need coloring books or snacks and crayons stored in front pockets of the zipper.5. Password: Three-digit password lock, you can easily combine 999 groups of passwords to make your travel more secure