I purchased these socks as they are double layer and supposed to be good for preventing blisters. I have only worn them twice (both times for approx. 1.5 hours each time) and already they are getting thin around the ball of my feet? I can also really feel the friction that will probably lead to more blisters, so a bit disappointed in this product. I will try wearing them with another pair of socks, but that kind of defeats the purpose! They did keep my feet reasonably cool though but if you are prone to blisters i would not recommend them. Also, another reviewer mentioned that they feel slippery inside the shoe... i have found that too so if you are needing stability i'd avoid them.