Work from any angle with this mobile stand-up desk featuring two independently tilting platforms made from Mdf mounted on a steel frame. The upper surface adjusts between 28.5 and 49.5 inches while the lower shelf ranges from 28.5 to 46 inches, giving you flexible configurations for laptops, reference books, and peripherals. Anti-slip baffles on each tilting surface prevent items from sliding off, and the overall structure handles up to 88 lbs.