Finalmouse UltralightX Prophecy Clix, Medium size! I used it for about 4 hours, but the size didn't fit, so I stopped using it. There are no stains at all. It's almost new. However, I have applied anti-slip stickers on the sides. If you are okay with that, please consider purchasing. The feature is that it is very light, so it is not tiring even when used for a long time. Also, it looks cool. Everything that was included is included.