I drive a lot with the bike and was looking for a cheap sunglasses.
it is relatively easy, although it looks pretty solid. it protects very well against leak eyes (at each ride or against wind). she sits without pressing firmly reliably.
frontal sun, however, I have subjectively felt that it restricts my view, as I see clearly without glasses clear ... I wear them then anyway since the impairments are lower (and not much!) than its other advantages!
There are certainly wertigere models for a lot of money.
this birlle is worth your money and has a fantastic price / performance ratio!