The Apollo features one of favorite design solutions from Dakine - a zippered top loader for quick packing with easy one-handed on-the-go zippered side access. This sleek urban style crosses over from travel, to work, to school with a padded laptop sleeve, top-load organizer pockets, and a dedicated headphone pocket. Go forth in style. Details: Ergonomic foam backpanel and shoulder straps with breathable air mesh, multiple accessory pockets, padded iPad sleeve, top load organizer pockets, zippered side pockets, quick access pocket, headphone pocket, side access, adjustable sternum strap, limited lifetime warranty. If your bag gets dirty, Dakine recommend hand washing with mild soap (like Nikwax Tech Wash), cold water and a soft bristle brush. If hand washing is not going to do the trick, use a front loader washing machine. To ensure your backpack doesn't get tangled, place inside a pillowcase or mesh bag before washing. Always use cold water, mild soap and run on a gentle cycle. Never bleach your pack. Hang to dry in a warm but shady place, ensuring both inside and out are dry before storing. Dimensions: 1830 cubic inches (30 liters), 23'' X 12'' X 8'' (58 x 30 x 20cm). Material: Polyester.