I have an air hole (the panda one). The material is good because it does not freeze. However, I find that when I breath with either my nose or mouth it does not really exit through the hole (like it should). Everytime I wear it the heat just going into my googles and then fogs or freezes the inside of my googles. I have had the entire inside of my mask freeze up on me and ended my day.
So I really only use my air hole only if it is the only available mask I have with me.