[Detachable Ergonomic Frame System]: Internal Frame Backpack designed with Detachable Ergonomic Frame System, which can be disassembled and assembled at any time according to the usage needs. Ergonomic back support better ventilation to dissipate heat and provide great carrying comfort. Without straining the lower back even if carried for a long time. Ideal backpack for men and women. .[]: This backpack measures 22 x 13 x 8.66 inches, 50L large capacity but only weighs 2.75 Ibs. It features a multi-compartment design, including 1 top zipper pocket (2 compartments inside), 1 main pocket (equipped with a laptop compartment, can hold 15.6 inch laptops), 2 cup side pockets, 2 phone pockets, 1 shoe compartment pocket and 1 rain cover bottom pocket. Suitable for hiking, backpacking and mountain climbing .[INCLUDES RAIN COVER]: The backpack comes with an extra waterproof rain cover pouch at the bottom, prevents water and dust from entering the backpack in the short term, the multifunctional design can meet the needs of daily use as well as hiking, traveling and outdoor adventures .[]: This backpack is made of sturdy tear-resistant and scratch-resistant nylon material with smooth zippers and excellent high-density stitching technology. Stronger stitching technology is used in needed places, such as shoulder straps, handles, bottom and other places. You don't have to worry about the backpack being torn when carrying heavy things, so you can travel without worry .[Cost-Effective Hiking Backpack]: The backpack has obvious advantages in cost-performance, reliability and quality;, You can get a great quality backpack of the same quality for hundreds of dollars less money.