The Oakley Spindle fuses two frame materials in one revolutionary design. The base of the frame is comprised of Oakley’s patented C-5 alloy. This is a combination of five different metals to make it both lightweight and strong. The second material, incorporated around the lenses, is O- Matter which is what most all of Oakley sunglasses are made of. O-Matter is known for having a great strength to weight ratio but is a plastic composite. This ring gives the frames depth and accentuates the lens shape. Grip-fit nosepads ensure a comfortable fit and Unobtanium on the temples will keep the frame in place even if you break a sweat. Check out the Oakley Spindle for a fused take on the most coveted eyeglass materials.