"I buy a new pair of Sanitas for work each season. I LOVE them. I find them to be super supportive and comfortable. So you can imagine how disappointed I was when I purchased this shoe with the new sole design and the sole started coming off after about two weeks. I bought a second air and the same thing happened. The sole used to be one piece but now there is a thin rubber flap that is attached to the bottom and this is what comes away. Terrible design and I am so disappointed. I so wanted this to be a great shoe like my other Sanitas but this is a design flaw and I will not be buying any Saints until it is fixed."