Thank you for viewing our products! We are committed to careful packaging and prompt service. Thank you for your patronage. [Walker Series] This is a classic Coleman series designed to be easy to use and fit anyone, from outdoor activities to daily use. [30L Large Capacity] Suitable for daily use as well as trips of about one night. Textbooks, documents, and changes of clothes can be stored without difficulty. [User-Friendly Square Shape] The square shape allows you to maximize the internal space. There is little dead space, and it is easy to store documents, files, and box-shaped items without waste. In addition, the opening is large and the interior is easy to see, making it easy to take things in and out. [Abundant Storage Space] In addition to the main compartment, there are pockets on the front and top, and mesh pockets on the sides for drinks, etc. The main compartment also has a multi-sleeve divided into two layers, convenient for storing laptops and tablets and organizing small items, so the inside of the bag won't be cluttered. [Comfortable to Carry] The back and shoulder straps use mesh material with good cushioning and breathability. It is also equipped with a chest strap, providing a more stable carrying experience. [Safe on Rainy Days] The fabric is water-repellent, and the zipper flap prevents rain from entering.