Supposedly a life time promise, but for the money if we receive a calendar year or two out of these we might be happy. So far, we like them much better than merino as our feet seem to be to remain drier. And they appear to be holding up effectively. https://getpaidtotravel00775.blogolize.com/5-simple-statements-about-how-long-do-i-wear-compression-socks-explained-71647708