Whether commuting or traveling the Gemini backpack is all about visibility and access. The unique 270-degree opening features a home for everything in an intuitive open face design. Once packed, you'll find easy on-the-go access to your laptop (in a convenient TSA laptop compartment), documents, and water bottle. The breathable foam backpanel and mesh shoulder straps keep you dry and cool on the move. If you identify with the hyper-organized Type A personality, this is the backpack for you. 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. Details: 600D polyester, multiple accessory pockets, TSA compliant padded laptop sleeve, fleece lined padded iPad sleeve, 270 degree zipper opening on main compartment, ergonomic foam backpanel and shoulder straps with breathable air mesh, adjustable sternum strap, quick access pocket, interior water bottle pocket, headphone pocket, limited lifetime warranty. Dimensions: 1706 cubic inches (28 liters), 21.5'' X 13'' X 9'' (55 x 33 x 23cm). Material: Polyester.