Hm, nice idea, I'll think about it. There's a hole cut in the bottom, the inside is completely empty, it's also padded with foam so it's actually really soft in there. It can get a little bit hot, yes, but overall I don't feel uncomfortable when wearing it. The screen is actually... I don't know how to call it, hard glass plastic or something? covered with window tint, so I can perfectly see everything, especially when it's sunny.