I've been wearing DNA UB for a while. I use them every day and in training. I tried the 21 in my normal size because I heard they were comfortable to walk on etc. As with most reviews the toe box is narrower than previous models. I probably could have gone a half size bigger but went for the 19th instead. Glad you did! Went with an eye catching color scheme, love them and they are very comfortable. I had foot and ankle problems and that seems good. I also like the new tread pattern. Def Capture CC1s!