Backpacks features: Twelve constellations elementary school schoolbag children waterproof backpack(Color-12 Color: we send based on the color or size of the main image of the product page. Quantitywe send based on quantity on title, if there is no quantity in the title, we send based on description. Colour:color-12 Children's backpack. Size: 31cm wide and 42cm high and 13cm thick-Healthy, comfortable and breathableDon't let schoolbags affect your children's healthy growth-Ergonomic design shoulder reliefThe S-shaped shoulder strap design is beneficial to reduce the burden and is not easy to cause hunchback, high and low shoulders-Water repellent and not easy to penetrateHigh-density nylon fabric, no longer afraid of rain-High-capacity multi-layer spaceEasily pack a lot of needed school supplies-Reflective strips on both shouldersHaze, rain, and at night effectively warn of passing vehicles, making it safer for children to travel