10 Best Waterproof Backpacks for College Travel 360 Reader Best Large Capacity Backpack Obackpack Of Compartment Camping Backpack Leather at Ellis Brashears blog. If you feel like you're carrying half of your belongings with you at all times, this backpack is for you! It has a spacious inside compartment (with a pocket for your laptop), and a hidden back pocket for safekeeping your most valuable items. Made from 100% polyester Fabric weight: 9 oz. yd. (305 g m) Dimensions: 16. 1 (41 cm) in height, 12. 2 (31 cm) in width, and 5. 5 (14 cm) in diameter Capacity: 5. 3 gallons (20 l) Max weight: 44 lbs (20 kg) Water resistant material Large inside pocket with a separate pocket for a 15 laptop, a hidden pocket with zipper on the back of the bag Top zipper has 2 sliders, and there are zipper pullers attached to each slider Silky lining, piped inside hems, and a soft mesh back Padded ergonomic bag straps from polyester with plastic strap regulators