Excellent ventilation, fit, and comfort. I have used primarily as a commuter helmet but also for a long distance tour for which it was also fantastic. I dont even notice its there which, to me, means it must be good. Despite being in the desert sun for six long days I found it vented well such that I did not get sweat constantly dripping in my eyes and no itchies, nor hot spots. The venting can be closed with a toggle on the top of the helmet so we will see how that does during the winter commute but I expect it to perform just as well. Better looking and more comfortable than my Bern.
None of whatever benefits or construction quality matters for this helmet because the tabs that protrude down the temples prohibit any kind of eyewear. Major flaw. I just gave mine away to Goodwill.
Great fit for my head. My only complaint is the light clip on the back - which doesn't function that well - my light falls off from time to time - not while I'm riding, just while I'm carrying it.