Separate Organized Pockets: 1*seperate padded laptop compartment for 13-17 inch laptop; 1*large main compartment to hold books, cloth, 2-3 days travel essentials; 1* front wet compartment to store wet items; 1*front zipper compartment for small items; 1*anti-theft back pocket for valuables; 2* side pouch for water bottle, umbrella Airline Approved & Personal Item Size: External dimensions are 16.9×11.8×6.1 inches (H×W×D), 1.87lbs weight and 25L volum. Fits standard of PERSONAL ITEM 18x14x8 inch. (manual measurement, for reference only, subject to actual measurement). It fits underneath find as well as overhead cabin Durable & Comfort: It is made of high-quality water-repellent fabric, with smooth zipper and reinforced stitching. Comfortable airflow back design, thick and soft multi-panel ventilated padding provides back support. Breathable, adjustable shoulder straps and a chest buckle to relieve shoulder pressure Bottom Elastic Strap: Comsidering the capacity, we add an elstic strap design on buttom, which can hold a pair of slippers or low-top sneakers, sleeping bag or something else. It will not occupy the volum of backpack and will extend more room for your storage User Friendly Design: You can charge the phone via the built-in charging port so that you don’t need to take the portable charger all the time. Just keep your phone powered up on the go. The backpack with luggage strap is easy to transport 100% Brand New and made of High Density and Water Repellent Polyester Fabric, not easy get wet and ensure long lasting usage