Most lap desk ergonomics are not fit for long-term use. The problem starts with the fact that, in themselves, most laptops are not ergonomic and require additional equipment for prolonged use.
Most lap desks are, by design, rather small work surfaces. There is little space for an external keyboard and mouse. Adding an external keyboard and mouse is necessary for ensuring proper ergonomic posture using a laptop.
Some of those do not have a laptop elevation mechanism, which means the laptop screen is not at an optimal position.
