A riser elevates the laptop to make a gap beneath it. This quarter inch of space lets hot air escape and reduces heat to the desks surface. This isn't quite sturdy enough to be a stand and it lacks any device that could make it a cooler. It's really a temporary solution for a stand designed for heat dispersal. Obviously it's less effectual than a cooling system, but more of a convenience if a cooler isn't available. This might be the cheapest, quickest, easiest way to make a gap of space, but it's also the crudest.