Balt Mobile Lapmatic Laptop & Keyboard Stand, Adjustable Height, (89829) The Lapmatic is the ultimate laptop stand, ergonomic and easily adjustable. Pneumatically adjusts in height from 20" to 30". Black shelf is angle adjustable and a mouse can be used on either the right or left side. Includes a padded wrist rest, and front is curved to provide ergonomic access. Black powder-coated steel frame with casters (two locking) for easy maneuverability.