100% steel construction, perforated to reduce weight. Works on cantilever arms to allow the unit to fold down. Small lever at bottom is only a safety device that locks swing arm system from collapsing the unit. The swing arm system is what locks the system upright. Literature can store in the unit when collapsed.   Color: Black or silver Bag: 600 denier, soft polyester, black with a red shoulder strap Pockets Number / Style: 6 pockets (3 on each side), double width portrait or single width landscape Pocket Size: Literature pocket 18.5” wide x 12” high x 7/8” deep Product Size Erect: 59.5” high x 20” wide x 14.25” deep Product Size collapsed: 8” high x 20” wide x 14.25” deep Shipping Size: 24” x 17” x 10 Shipping Weight: 39 lbs 24x17x10 Product code: ZD-2-B or ZD-2-S