[Let's Go] Pokeball Plus Question

Hey guys, I just have a quick and simple question about the Pokeball Plus.

What material is it made of? Like is the top a hard plastic or does it have a rubber layer on top. I haven't seen one yet and I haven't really seen anybody talk about what is it actually made of. I do know it is slightly heavier than a normal Joycon though.

It is a rubber like material, the black part between the red and white is hard plastic. It feels very nice