Fits my big head snugly, and is very warm. Tried it today while shoveling snow in 15-degree weather,
and my brain case was kept very warm. I had to take it off, and "cool off" before finishing the task at hand.
If you wear glasses, you'll need to have your nose poke out, or you'll need a defogger for your spectacles.

Darned thing is warm as heck.
Nicely made too.
Just don't wear it entering a bank.