BUILT TO LAST – All pockets and zipper are reinforced with bartacks and tight sewing, quality made for rugged wear and tear. Velcro sewed on pockets preventing items falling off when you bend over SIZE DESIGNED FOR AMERICANS - The size chart is formulated based on the survey of body measurements to ensure a better suit. MULTI-FUNCTION POCKETS - Left chest phone and clear ID Pocket with flap closure; right chest 2-tier, 4-division pencil pocket; two lower outside cargo pockets with flaps. USE IN PROXIMITY TO ROADWAYS - Great for road work, construction, security, airport, crossing guard, traffic control, warehouse, survey, railroad, airport and industrial workers, drivers, inspectors, engineers, contractors, volunteers and more