I found these pretty funny when I saw them. My first thought is just where exactly is your wrist supposed to be? This is my first time ever seeing something like this so I’m not exactly sure how it works. I mean, having your wrist in between the breasts looks uncomfortable and impractical but it seems to be the “correct” place to put them. Could it be you use one side only? I really have no clue.
Anyways, according to Tokyohive, these are not official goods and they were produced in China by a company claiming to have gotten the “all clear” for copyright use. Now that these AKB mouse pads have surfaced, will we be expecting a Morning Musume version soon?