I bought these socks because my toes tend to rub together while I'm running, creating uncomfortable blisters.  I used to spend a lot of time rubbing Vaseline between my toes or putting on Band-aids to avoid blisters.  I have yet to try these socks in warmer, more humid weather, but so far I am happy with them.  One con, however, is they are not very warm so on cold days, I wear a second pair of socks over them.