I was introduced to the Arc 3 through my physical therapist about 2 years ago and it has made such a difference in my daily life and comfort level. I have multiple back problems (bulged discs, mild scoliosis among them), and I work at a job that requires I be standing for many hours. Since I began wearing this shoe I can say I am in far less pain than I used to be and can handle standing and walking for much longer time periods. In the past I have spent hundreds and hundreds of dollars on shoes, buying all kinds of brands and styles trying to find something that was comfortable and supportive and I could not find anything. I now own 3 pairs of the Arc 3 and have given away all of the other shoes I had bought. I know everyone's bodies are different and what work's for some people might not work for others, but for me personally this is the only shoe I can wear and it has made a remarkable difference in my daily life. I will continue to buy this shoe for as long as it is made, and actually plan on keeping multiple pairs on a "back stock" in my home because I would be pretty devastated if something changed in the make of the shoe that changed the way it fit or offered support. A great shoe worth every penny!