Pros: Comfortable, Durable, Optimal clarity, No glare
Cons: nose grips slip when sweaty

Last weekend i took these glasses, and wore them during my half marathon in Disneyland California. These sunglasses performed superbly. The only issue i had was when you sweat in excessive quantities, the nose grips slip a little. Other than that, these are the best pair of sunglasses i've ever had.