High Sierra Allegiant Backpack Grid-weave Duralite; shiny mini-waffle weave Large, multi-compartment design CUSHION ZONE padded computer sleeve holds most 17" notebook computers (Maximum Size: W 16" x H 11" x D 1.8") Easy-access MP3 player pocket with customized, zipper-stop headphone port also holds sunglasses or other necessities Adjustable bottom and side compression straps secure heavy loads and additional gear