I bought these for when I want to do yard work without hurting my feet but I also don't want to wear shoes.  They are great for that.  I find that they were rubbing initially on my instep and Achilles tendon.  One time I got them wet and after they dried they were much more comfortable.  I recommend breaking them in by getting them wet.  Also I wore them enough to get a bad smell so I used Oxyclean in them and they were clean as new and didn't smell any longer.  I recommend these to anyone who doesn't want to wear shoes but needs foot protection.