REI Ruckpack 18, teal color. Features are from REI: Rugged nylon shell and polyester lining fabrics are 100% recycled Nonfluorinated durable water repellent (DWR) finishes on the shell and lining help moisture bead up on the surface Nongendered, padded shoulder straps and an air-mesh back panel offer the comfort and support of a hiking pack Adjustable sternum strap provides extra stability while you're running to class or chasing a bus; sternum-strap buckle doubles as a survival whistle Waistbelt is removable when not in use Laptop sleeve; 13 x 11 in. sleeve holds a 15 in. laptop Zippered interior lid pocket helps keep you organized Easy-access side pocket with hidden zippered security pocket inside keeps travel essentials convenient and well-organized Stretch bottle pocket holds water while on the go Compression straps secure your water bottle and keep the weight of the pack close to your back for stability Discreet split-webbing daisy chain on the front of the pack lets you lash on gear Trekking-pole loops and tool keepers with squeeze locks stash away when not in use—creating a more streamlined look for travel or everyday use