Make your long days at university or work as pleasant as possible with the new Semester 28L pack from Dakine. A really cool pack with numerous, pracitical features. Details: Padded laptop sleeve, fits most 17'' laptops, ergonomic foam back panel and shoulder straps with breathable air mesh, fleece lined sunglass pocket, mesh side pockets, fleece lined padded iPad sleeve, organizer pocket, 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: 1700 cubic inches (28 liters), 20'' x 13'' x 8'' (51 x 33 x 20cm). Material: Polyester.