Constructed of welded, powder-coated steel and aluminum, J-Mobility SL rolls over rough surfaces on 5 1/4 in. rubber casters. Work surface adjusts in height from 29-39 in. and sits on angled post for easier, more comfortable access. Auxiliary trays hold keyboard and mouse. Optional cable management system organizes power and signal wires. Optional laptop work surface physically locks computer, protects it against spills, and provides spare surface for notebooks and binders.