Still generally prefer the shape and design of the Koo Demos for my whopper head, but I find the frame bottom of the Demos to impede vision a bit. That�s why I bought the Alibi. Unfortunately the Alibi is a bit narrower across the lenses, and the temple is perhaps a bit short so the glasses want to fall forward and down. Works great with the Kask helmet, much better than other brands. It�s better than most and probably ideal if your head doesn�t fill a 10 gallon hat.
