I've had mine for a week now - went to a county fair and walked in these all weekend on dirt & gravel roads and grassy roads, and walked through airport terminals as well.  They have been very comfortable.  They got a little dirty from walking around the fair but much to my surprise they simply wipped clean!  Love them so much will buy another pair (or two) in different colors.  This particular style (circuit breeze) is very comfortable and looks good too.  Very pleased.