Use this height-adjustable mobile laptop caddy to move, stand & sit for a healthier workday. Gas-lift-operated arm raises the desktop up to 40.9" standing & lowers it to 28.7" for sitting. You can roll your desktop where you need it & sit or stand in offices or meeting rooms. Four easy-rolling casters swivel to overcome corners & busy hallways. Two of the casters lock for stability while you work. Sturdy base includes two generously spaced legs on the working side so your legs fit comfortably. The two legs on the public side feature a short extension & are close to each other so you can pull up to most desks & tables. Durable, black, stain-resistant laminate top includes a tablet holder & cup / pencil holder. Base is made of steel tube & aluminum base with a powder-coat finish for durability.