No metal on Earth was strong enough for Oakleys standards yet lightweight enough for the all-day comfort you expect from Oakley eyewear. That’s why Oakley created X METAL Titanium. This ophthalmic-specific frame takes full advantage of the proprietary alloy, shaping it with channel details and icons set in sculpturally contoured temples. Piston spring hinges offer a secure, comfortable fit and supple UNOBTAINIUM temple sleeves increase grip with perspiration.