Is there a wig that doesn't heat your head? - eviltoast

My mom would not be able to wear a hat during the summer obviously heat would stay in and she would get too hot. She needs a wig, but that wig should, for lack of a better phrase, breathe.

So it doesn’t hold the heat in near the scalp.

Is there a wig that is like that? Or do all wigs effectively hold heat to the scalp?

Edit: I’m sorry if I wasn’t clear. That’s on me. I meant will a wig be more warm then normal hair?