1. Features: The carefully woven luggage strap makes it very convenient to fix the laptop bag on the luggage trolley, making your journey more convenient wherever you go. The reflective strip on the front ensures safety when cycling, running, or walking at night. 2. This backpack is large and durable, suitable for college, travel, business, daily use, and outdoor activities. It is made of waterproof and durable polyester fabric and is equipped with metal zippers, ensuring safe and long - lasting use for daily and weekend needs. It is very suitable as a professional office bag and is a large backpack for high - school boys, girls, and teenagers. 3. This bag is finely crafted, and every detail undergoes multiple layers of inspection, as details determine quality. Note: Due to different measurement methods, a measurement error of 1 - 2 centimeters is within a reasonable range. Due to differences in camera or screen display, slight color differences are allowed. It is normal for a new bag to have a bit of an odor. Please leave it outside for a few days. 4. Occasions: The large size can meet your daily needs, such as shopping, work, baby - care, and travel. Moreover, it is really light and suitable for all ages. It is a practical bag for those who need to carry a lot of things.