I have a slightly oddly shaped larger head and this "Micro" helmet even fits me. I wear it for a 2 hour commute and forget I am even wearing it. Now it did take a few rides to get accustomed to the fit, but after that, I don't notice I am wearing it.The adjustments are easy to make and it is a great idea to have the dial fit adjustment system to get a more custom fit to your head.I have worn it on a few warmer days so far and my head still sweats, but I can feel some cooling due to the vents.I would only take off 1/2 a star for the visor. It completes the look of the helmet, but it is barley held in place. I will be gluing the visor to keep it in place.For $20, you can not pass this up and ride with an unprotected noggin.