Supposedly a life time guarantee, but for The cash if we have a yr or two out of them we would be happy. Thus far, we like them a lot better than merino as our feet seem to remain drier. And they appear to be holding up properly. ✔️ Durability: https://lorenzoghfbw.blogs-service.com/63407682/the-smart-trick-of-compression-crew-socks-that-nobody-is-discussing