✅Water Resistant Oxford Fabric - Made of Oxford fabric and soft polyester lining, weighs 1.9 lbs, sizes from 25 to 40 liters, dimensions are 18.1"H x 11.8"L x 6.3"D. Padded computer layer in rolltop main compartment measures 13.7" x 11.8" x 0.9", fits some 17.3 screens, macbook pro 16", all 15.6" screens, and smaller sizes. The front compartment measures 12.9" x 10.6", can hold A4 size notebook. ✅Roll-Top Main Compartment - The main compartment of the backpack is closed by velcro, has a padded computer layer, a mesh zip pocket and two small patch pockets. The backpack also has some other pockets for organization. Front compartment is closed with velcro and can hold A4 size books, notebooks, tablet, etc. Front zip pocket for cell phone or some other stuff. Small zip pocket on roll-top flap for quick access. Double side pockets for umbrella and water bottle. ✅Hard Panel for Back Protection - The back hard panel relieves your back from the pain of hard objects in the backpack. which makes your trip more comfortable. Sternum strap can help with localized pressure on your shoulders. Adjustable shoulder straps allow the pack to fit most people. Luggage strap can lighten the load when traveling. ✅One Backpack But Multipurpose - You can use this versatile backpack for study, work, travel, camping and hiking. It can follow your footsteps always.