This versatile durable backpack is designed for any day hike or urban adventure. Merging the needs of both worlds it has a hydration port and tube keeper on the shoulder strap as well as a padded laptop sleeve. Rugged 600D polyester ripstop with PU coating Bottom is 600D polyester woven fabric with PU coating Large main compartment Sternum chest strap with integrated whistle Quick-release buckles Multiple pockets for easy organization Side compressions straps with Hypalon anchors for load stability Adjustable padded shoulder straps Air mesh back panel Laptop sleeve dimensions: 11 h x 11 w x 1 d Dimensions: 18.5 h x 10.5 w x 7.5 d; Approx. 1 457 cubic inchesNote: Bags not intended for use by children 12 and under. Includes a California Prop 65 and social responsibility hangtag.