I bought some 3 weeks ago and it took me about 2 workouts to get used to them. I work out a lot, eliptical and weight room 5 days a week about 2 hours at a time, so my shoes must be comfortable. I don't know if they are doing anything "extra" for me, but I do like them. That being said, I wouldn't wear them while traveling, especially for long hauls and multiple airports. I want all the stability I can get in those situations.