Sturdy Material: Made of Washable 100% Polyester Fabric, PU reinforced corners , It is a Lightweight fabric that is also VERY sturdy and withstands daily wear and tear^ Perfect Size: Backpack measures approx. 39 cm/15.4 inches in length and 34 cm/13.8 inches in width, it is big enough to carry a pair of shoes, bottle, basketball, an umbrella, a few books, lunch or clothing. Idea gifts for birthday party, carnival, construction giveaways^ Multicolor: 10 colors of drawstring bags, include black, red, yellow, royal blue and so on, with a variety of colors, can make your life colorful and you can choose a color based on your interests every day^ Wide Application:can serve as a traditional backpack, gym bag, travel cinch bag, also can provide as bags when you go to schools and supermarkets, suitable for home storage, with drawstring, can hold the inside items well^ After-sales-If you have any questions about our products, please contact us in time.