150 Denier polyester twill material with double hemstitched pockets and seams to increase wear resistance from washing|Built to last heavy-duty brass snaps and grommets|Mesh side vents|Dual reflective chest strapst|Cell/radio pocket with hook-and-loop fastener|Safety D-ring slot access on back|14" zippered pack across entire back area|8 pockets with hook-and-loop fasteners (5 outside; 3 inside)|Brass grommets on lower front pockets for surveyor tape dispenser|Long ruler slot pocket on left back