Fabric: Backpack with high-quality water-resistant fabric, rainstorm is not afraid of wet, easy to clean, a wipe to dry. The material is very safe, durable and wear-resistant, so children can use it with confidence. In addition, the shoulder straps and hand straps and other frequently used places are reinforced stitching, so that the backpack can be used for a longer period of time.Large Capacity: Backpack size is: 13.39*7.87*17.32inch./34(L)*20(W)*44(H)cm. The backpack has 2 elastic side pockets, 4 external zippered pockets and multiple internal pouches that can hold all the items needed for daily use. The backpack& 39;s more scientific interior divider pockets allow children to develop good habits of organizing and organizing.Practicality: This is a practical rolling backpack, back and pull dual-use. Two wheels Suitable for flat roads, six wheels can climb stairs, rubber wheels silent and wear-resistant. Aluminum alloy trolley has three layers of height can be freely adjusted according to height, and the trolley is removable, very convenient and practical, providing great help for children& 39;s daily travel.Multifunctional and Lightweight: Not only can be used together with a trolley can also be used alone backpack. The bag itself is very light, can reduce the burden of children, very suitable for daily use. And you can use it in different occasions, the children will love itThe rolling backpack is ergonomically designed with a nylon hand strap and breathable straps to protect your child& 39;s shoulders. A variety of colors to choose from, solid color simple design, whether you buy it for your own child or give it to a friend, it& 39;s a great giftThis solid color design of the bag simple and convenient, suitable for a variety of occasions whether you go to school, field trips to the supermarket are a good choice.Plenty of blank space, you can also feel free to decorate the bag."