-Design style: Combining leisure and business styles, the appearance is simple and atmospheric, with a variety of classic colors such as black, dark gray, khaki, etc., which can be matched with various dressing styles, suitable for campus learning, business travel, or travel.-Capacity and Storage: With a large capacity of 20-35L, the main compartment is spacious and can hold large items such as clothing and books. The independent computer compartment can accommodate laptops of 15.6 inches or even 17.3 inches, and is protected by thick sponge for good anti-collision effect. Multiple small pockets and compartments for easy classification and storage of stationery, power supplies, documents, and other small items. The three piece set usually includes a small storage bag and a crossbody bag for easy carrying of small items.-Material and craftsmanship: Made of high-strength wear-resistant fabric, it has a certain degree of waterproofness and can cope with light rain weather. The stitching is fine and firm, the hardware accessories are of high quality, durable and not easily faded or damaged.