My 6 year old hates socks and refuses to wear them not matter how cold it is (I live in Southern California where we consider freezing to be anything below 65f).  She mainly hates socks due to the seams bugging her toes which I can relate to.  These do have seams but they are much less noticeable than any of the other socks she had so she tolerates them at least when we make her wear them.  It's still a fight but these help a lot!