Iconic Heli Pro is built for wintery outdoor recreation, but doubles for year-round everyday use. The same features that make the Heli Pro your favorite sidecountry pack like the roomy interior, organized front compartment, and carrying straps, make this a great everyday school pack. Featuring a laptop sleeve, hydration compatibility, a fleece-lined goggle-sunglass pocket all in a sporty pack that easily transitions from weekdays to weekends. Details: Vertical snowboard carry, diagonal ski carry, fleece lined goggle pocket, hydration compatible, non-padded sleeve fits most 15'' laptops, organized front pocket, rescue whistle on 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: 1200 cubic inches (20 liters), 21'' x 12'' x 8'' (53 x 30 x 20cm), 1.8 lbs. (.8kg). Material: Polyester.