2" Vi-brance reflective material in 4" contrasting tape meets WCB/Worksafe/DOT configuration 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