The "cushion" built under the support is very comfortable and allows using his laptop on the lap for hours without being bothered (I've made especially for that, my PC is brand new, I have not yet overheating problem). The size is perfect for a laptop 14 ", the PC does not move, it is well maintained. I tried the ventilation system with an old Acer which heated a lot, the first speed is not very effective, however, we gain 15 to 20 degrees on the second!