anything as long as its not polarised… was in a shop last week (ok, an Oakley outlet store) and the sales girl was trying to convince some guy that the polarised (150€ rather than the same frame, non-polarised glasses for 95€) were the ones to get. tbf, she was fat and i doubt she had ridden a bike-bike ever and oakley to present the polarised lenses as being better for riding. (in the store there was a box with a light and some glass slid in there. with normal lenses you could see the reflection of the light and coudn’t see the image beneath the glass. with the polarised lenses you could.)
i had a pair and now rarely use them and then only for driving/looking cool.
find the polarisation (word?) makes rocks and other slick surfaces appear wet. don’t get what the advantage would be. for fishing however they are much better!