1. This is a multi-functional bag designed specifically for outdoor sports and leisure travel. 2. It is made of Oxford fabric, which is sturdy and durable and can adapt to various complex outdoor environments. It has good waterproof performance. Even on rainy days, you don't have to worry about the items inside the bag getting wet. 3. This bag has many design highlights. The overall appearance features a solid - color pattern combined with popular stitching elements, presenting a simple, fashionable and unique look. Its internal design is very user - friendly, with a dry - wet separation function that allows you to store dry and wet items separately to keep the items inside the bag dry. At the same time, it is equipped with a USB interface, which makes it convenient for you to charge your electronic devices when you are out. 4. The lining of the bag is made of polyester fiber, which is not only comfortable and breathable but also can protect the items inside the bag well. It is 15 inches in size and can hold a 12 - inch computer. The large - capacity design can meet the need to carry various items during travel or outdoor sports. Whether it's clothes, a computer, a charger or other daily necessities, they can all be easily packed. In addition, it can be used as a chest bag or carried cross - body or on one shoulder. Multiple carrying methods can meet the needs of different scenarios and personal preferences. Whether it's for leisure travel or outdoor sports, it is a reliable companion for you.