One of these came with my School Days game. I'll post pics of it later.
I'm surprised someone hasn't made one of these where there is like a layer of water with a white substance enclosed in plastic over the boobs/face so that as you move your mouse it looks like ejac is spreading. I feel like I should copyright that idea.
Stop giving Japan ideas!
The strange thing about these pads is that they're 3D. Don't know how 3D enhancements makes the experience.
That's not strange at all, nearly all oppai mouse pads are like that. They're called "3D" because while most of the image is flat (the face where you put the mouse) the breasts are filled with silicone or something. It's just a cheeky take on mouse pads with wrist rests.
See, they work like this:
I bought one off ebay as a silly birthday present for a friend a few years back. I'm sorry to report the boobs don't feel anything like the real thing, but you can hardly expect them to. I imagine it probably varies from mouse pad to mouse pad though.
I find ass mouse pads more amusing for some reason.