WHITINMen's Trail Running Shoes Minimalist Barefoot 5 Five Fingers Wide Width Toe Box Size

I'm on my feet all day, are these comfortable for all day? I'm also an 8.5 to 9. I don't see these sizes

How breathable is the shoe? My feet get warm easily.

Can these be laced up and tied like regular sneakers?

would these work as gym shoes?