I purchased these socks prior to some longer races and I'm so happy that I did! Both races were in Hawaii--one was 8 miles and the other was a half marathon. I didn't have a single blister after either race and my feet felt great. Even though the days were hot, the socks kept my feet dry and didn't rub at all. I also went on some 2-3 hour hikes with the socks and my feet were still in great shape. I followed the recommended washing instructions and even after lots of miles and wash cycles, they still are as good as new. I definitely recommend a pair!