Large capacity backpack 413011.5 centimeters 16.111.84.5 inches. There may be an error of 12 cm during the actual measurement process, and the actual size is based on the specific product size. Highquality fabric The backpack is made of highquality polyester fabric, which is tearresistant, scratchresistant, comfortable, breathable and easy to clean. The storage bag is made of cotton and linen fabric, which is durable and easy to store. Ergonomic design According to the principles of ergonomic design, it consists of a shoulder strap composed of a threedimensional mesh and multiple layers of sponge to ensure optimal pressure relief and comfortable wearing. Applicable occasions Suitable for all occasions, such as daily school, outdoor sports, shopping, fitness, gatherings, picnics or travel. When you go out, you can put various items you want to carry in the backpack. Customer service If you have any questions about this product, please contact us and we will reply to you as soon as possible within 24 hours. Happy shopping