First the positives. The product is very quiet and the double usb connector with a female port does mean you don't lose a port when using it. It is lightweight and so is easy to transport. The raised rear legs also give a comfortable angle for working and the rubber pads prevent the unit and the notebook sliding around. In terms of size, it fits nicely under my 13" notebook and is unotrusive.
Now to the negatives. The product must be seated on a solid surface, it is very flexible, and the fan blades are totally exposed on the underside of the unit - very dangerous for little fingers. This also means that if you have anything slip underneath, papers etc, the fans get caught and stop working. As far as cooling my notebook - it doesn't. It produces very little air and I have found that the work surface seems to get most of the limited cooling effect with the notebook remaining as hot as before. Even the underside of the notebook does not appear any cooler with the unit running than with it unplugged.
To conlcude. The only cool thing about this product is the blue lights!. Despite fast delivery from the seller, I would say consider other options. The only thing it does appear to do well is to live up to its price - cheap.