As a cosplayer i often wear heavy costumes that can get very hot under all those layers. I was thrilled to discover this USB gadget that helps keep me cool .Based on my experience, this Aquarium Raspberry Cosplay Cooling Ventilation keeps my costume breathable and prevents overheating. The sleek design lets me attach it easily to my outfit without it getting in the way. The only downside is that it may not work as well for larger costumes or in extremely hot temperatures. Overall, a great product for computer-based cosplayers looking for a little extra cooling power..