Love these Thorlos socks!  I originally started buying them for our family trips to Disneyland, where I regularly walk 15K steps per day.  I used to get terrible blisters every time we went, but my doctor recommended I try Thorlos and I haven't had issues with blisters since.  They provide great cushioning and moisture absorption and are very comfortable.  I initially was worried they would be too thick or would be hot, but that hasn't been the case.  They do look a little small before they're worn the first time, but they're very stretchy.