If I lost this pair, I'd buy another pair in a heartbeat. Great lens selection and variety. With the RX system in they are a little heavy. Hard to find a better deal, especially if you wear RX lenses. More durable than my Oakley's but not quite as good with the optics.
Lenses are more scratch resistant.
Good product for the money. Get a pair if you are a 4-eyed loser like me. If not, go for a pair of oakleys, may be cheaper with similar performance. My only problem with this glasses that they fog up with the brow pad on them. Never buy Bolle.