Made from 630-denier 100% nylon (50% recycled/50% high-tenacity) plain weave with a polyurethane coating and a DWR (durable water repellent) finish, YKK zippers The main compartment holds much of the load and comes with a raised, padded sleeve with buckle closure; accommodates most 15-inch laptops The sleeve, equipped with a tube port, accepts a hydration reservoir when your feet leave the cement Pens, business cards, keys and other small necessities go inside the second pocket Front stash pocket with zipper, for tickets or other small items Two large water-bottle pockets stretch to fit your favorite vessel Highly breathable mesh on the back panel and shoulder harness for all-day carrying comfort Adjustable and removable sternum strap Great used condition. A few small marks as pictured.