This long-distance trail running backpack has a capacity of 30L. It adopts an ergonomic design, combined with gravity transfer and scientific pressure - dividing technology, along with breathable shoulder straps to relieve pressure and ensure comfort and portability. Made of Dalmar high-molecular fabric, it provides high-strength protection, being scratch-, wear-, and tear-resistant. It has multiple functional loading areas, including main pockets, side storage, and back storage, each serving its own purpose. There are numerous functional detail compartments, such as a water bottle and mobile phone compartments. The roll-top design can expand the storage space. Available in colors like army green and blue, it is suitable for various scenarios such as camping, trail running and Hiking.