Features: Large capacity main pocket, detailed layered, meeting your daily needs. Independent computer interlayer pocket can accommodate 16 inches computer. Seperated into functional pocket, certificate pocket, back pocket, front side pocket, bus card pocket, computer interlayer pocket, side water bottle pocket. USB cable port, easy to connect mobile phone when going out. Oxford fabric, waterproof and dustrpoof, spill-resistant and antifouling. S-shape shoudler belt with high-elastic breathable back mat, shockproof and labor-saving. Back fixing belt can match with luggage box to reduce your trip burden.