Supposedly a life time warranty, but for the money if we get a year or two away from them we might be happy. To date, we like them better than merino as our feet appear to be to remain drier. Plus they seem to be holding up well. ✔️ Sturdiness: https://rolling-office-chairs-wit62596.blogsumer.com/31833496/the-smart-trick-of-sell-used-socks-that-no-one-is-discussing