I've been using them on my Harley for over a year. I broke my first pair. ordered another. Lost my second pair. I have ordered another one. Love love love her with only one negative point. As others have pointed out, the rubber pads on the ends of the frame arms come loose. Over time I lost all four of the first two pairs. My third pair just got delivered an hour ago and the first thing I did was apply a small amount of super glue to keep them from falling off. I don't understand why they aren't fixed permanently. Maybe they can be replaced, but I can't believe you'll ever need to replace them. You will receive several items in the package, so there should be at least a few extra items in the suitcase. Other than that, I've never had a problem with air leakage. At first I doubted the lenses would fall out, especially after prolonged use. However, I've never had a popup. I keep a case in my saddlebags so I can change lenses as riding conditions change (e.g. day to night, clear skies to cloudy, etc.). I rarely post reviews, but it didn't hurt to take a few minutes to share my thoughts on them.
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