My review covers two pairs of Holster Fireflyers: an very old pink pair and my new black pair: after years of hard work, the pink pair is still perfect and I walk levelly on them. The inside of my feet seems to be heavier so that shoes quickly turn inwards. Not the Holsters: their soles keep me walking levelly (I realize that it is not a word, but I can’t think of a better word).. they are comfortable and enduring and I look forward to spend years in the black pair. The pink pair is unfortunately beyond cleaning. I have tried spot-cleaning, wool washing machine programs, but a curry spot or a drop of red wine that goes unnoticed … too little, too late. Thank you for selling them online.💐