A power hungry furnace produces C-5 alloy, the ultra-strong and ultra-lightweight chassis of the Wire™ frames. The latest release, C Wire™ features a redesigned bridge and refined earstems, plus a unique spring-hinge mechanism that holds the frame comfortably in place. Wires are engineered with XYZ Optics® to conduct clarity through pure Plutonite®. All Oakley eyewear is warranted for one year from the date of purchase against manufacturer defects.