I've had the boots for 2 1/2 months and I have been really impressed with the comfort of these boots! I have worked several fourteen to sixteen hour shifts while wearing them and have yet to experience any foot discomfort. I am a K-9 Officer and I am constantly on my feet and on the move, and not sitting in a vehicle; and the Mission Blacks have far exceeded my expectations! I concur with a previous review, that the initial break in of the boots was a little rough and seemed to take a little longer than with other manufactures, but has been worth it! I am anxious to see how comfortable they are going to be in the extreme South Texas heat? My only criticism of the boots are they are a heavier than other boots that I have worn before from other manufacturers. The Mission Blacks are my second pair of Haix Boots that I own and very happy with both pair boots! Keep up the good work Haix!