I have 2 pair of the glasses with the surround foam. One pair, that I use with my half helmet, I have super-glued an adjustable strap on so that I can secure them like goggles. The 2nd pair I use with my full face helmet (my eyes are sensitive to even the slightest wind inside). Both have interchangeable lenses: Dark for day time, Amber for night. The Amber lenses increase contrast for me.