I have a pair of motorcycle glasses with wind shields around the outside but they are dark, so bad for nightriding. I bought the Sunglass Spot because I figured I could pop out hte lenses and switch'em. didn't work; they're different sizes 45 mm versus ??mm. So I tried out the Sunglass Spot clear "sunglasses" for nightriding and guess what? They're great. I don't ever ride very far at night anyway, mostly just around town. Great!