School Case rounds up all your loose writing and learning utensils into one handy zippered compartment. It's also great for managing cables, chargers-basically any of the loose stuff that you spend way too much time searching for in your bag. Details: Pencil organizer, interior zippered pocket, 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: 8.5'' x 4'' x 2'' (22 x 10 x 5cm). Material: Polyester.