These socks exceeded my expectations.  They are not too tight, stay up most of the day, and keep my feet from being sweaty.  They also seem to help with the odor issue.  I just ordered more so that I have plenty for work.  Am washing them now & will update if they do not perform as expected. UPDATE 01/07/2012: I washed the socks and they did shrink but stretched right back into shape as I wore them today.