First impressions (I still need to use them and see how well they last) is great. They fit perfectly, no rattle or movement, shape and finish perfect. Arrived in a cool little pouch that protects both lenses. No distortion, very clear, they seem to let more light through than the equivalent OEM lenses, but for most situations that's better (although for alpine/glacier use I'd personally need darker). Let's hope that they are robust and withstand the use that these types of glasses are meant for.