They Rock!
I have been using the Quam's since April, and I am very, very pleased with them. I received a few different pairs of Tifosi shades at my doorstep one day as part of sponsorship for the Cateye Enduro race team. I was a Rudy Project user in the past and these are an exact clone of Rudy's at about half the price. They fit snug, so you don't have to worry about them falling off, plus they come with 3 sets of lenses, a hard case, and cleaning cloth. I am not the type of person to promote a product just because they are a sponsor. I like to tell it how it is. All in all, I would recommend these shades. An added bonus that I have notice over the Rudy's I used in the past is that the Tifosi glasses that I am using do not fog up. Get a hold of me if you have other questions.
Jeff