Product details:

Optimized with Mono Shock hinges, Oakley Halfshock brings the semi-rimless look to active lives that make style a very comfortable thing. We crafted it with durable yet lightweight C-5 alloy and shaped the earstems with sculptural contouring to put an edge on originality. Only the finest materials and craftsmanship can achieve the mechanical precision of Oakley Mono Shock hinges. They maximize durability by allowing hyper-flexing when necessary, so an active life doesn't have to hold back. They also achieve a subtle spring effect to make the fit comfortably secure without excess pressure. With the addition of Unobtainium on the earstems, Oakley Halfshock actually increases grip when you sweat. Add all that to a semi-rimless architecture with no lower rim to block downward view, and you've got a frame that goes from work to workouts and beyond.