Think it's a couple of years warranty period rather than lifetime now. I'm an idiot in the way I broke them and for misplacing proof of purchase. TBF they offered a good chunk off some new ones, but I wasn't exactly bathing in cash at the time so took a chance on the cheaper option.
Broke official frames, bought the foakleys to use with the official lenses.
Also polycarbonate blocks UV-A and -B.