Snug like a bug!
I have a HUGE head so I got the XXL. It fits nicely. On my first trip to the winter wonderland, my left ear got sore form pressure. I gave it another go a few weeks later, and it was fine! Maybe I just had to break it in.
The sound is great for music and also talking on the phone. For some reason my auto answer didn't pick up, but that's probably a phone problem. I didn't like the fact that the microphone was located too far down on the cord. I had to take it out about 1 foot and hold it to my mouth as I spoke. I loved the surround sound phone conversations! I recommend this helmet!