It was really tight for the first few hours of wearing, which worried me at first. (I have a small head, and so, I bought the small, according to the sizing chart. I was worried that I had bought 1 size too small.) But after a few hours of breaking it in, it fits just right - not too tight or too loose. I do have to take my big glasses off to put it on, even with the front flipped fully up; however, I can actually get it off easily while wearing my glasses. I love the inner tinted visor; I use iSee full review