Supposedly a life time ensure, but for the money if we get a calendar year or two outside of them we would be happy. Thus far, we like them better than merino as our feet appear to stay drier. And they appear to be holding up very well. ✔️ Durability: https://multilingual-content-mana30740.csublogs.com/39281322/a-review-of-compression-socks-for-feet