The helmet is lightweight and quite comfortable, but I did not realize how over-vented it was until the first day I wore it skiing. One of the things I like about helmets is that they keep your head and ears toasty warm and dry. I wore it on a fairly mild PNW skiing day (25 degrees, light snow, no wind) and my head froze off. The vents are not closable like every other helmet I have owned.Wearing this helmet on a cold day in the Rockies would possibly be fatal. Unlesss there is an easy solution I will need to find aa different helmet.