First let me say, I love this shoe!  I love the way it looks and how comfortable it feels.  However, several pieces of the tubes began to break apart after wearing them for only a couple months (delivered on 4/23/15).  When the tube breaks, it snags the floor.  I've lost my balance and stumbled as the broken piece acts like a brake, disrupting my foots' forward motion. I was able to regain my balance rather quickly, but someone who can't could potentially fall, risking bodily injury.  I had to cut the broken pieces off to prevent possible injury.  Aside from the tubular defect, I still like the shoe.