Heavy duty 600D-denier poly.  Spacious 12.6 x 18.5 x 5.9"  100% polyamide; 100% polyester lining; Water repellent. Fits up to a 17" laptop. Front access stash pocket with organization panel; top-loading main compartment; deep side pockets including mesh pocket overlay; large front external zipper pocket; sternum and compression straps. Padded shoulder straps and back panel with mesh inserts. L&W Supply logo embroidered in traditional colors for a "classy, high end" look.