The Xtreme is ready for urban work school or outdoor activities 1 680 denier polyester with 600 denier polyester canvas accents Hydration port at top Main compartment with dedicated padded laptop sleeve/hydration pouch Air mesh padded back panels Ergonomic air mesh padded shoulder straps Sternum chest strap Stretch air mesh side pockets Front zippered pocket with key clip Sideentry front flat zippered pocket Daisy chain attachment system Laptop sleeve dimensions 13 h x 12 w x 1 d fits most 15 laptops Dimensions 19 h x 135 w x 55 d Approx 1 410 cubic inchesNote Bags not intended for use by children 12 and under Includes a California Prop 65 and social responsibility hangtag