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; Side-entry 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 13.5"w x 5.5"d; Approx. 1,410 cubic inches; Note: Bags not intended for use by children 12 and under. Includes a California Prop 65 and social responsibility hangtag.