I purchased one of these belts in December of 2012 and used it on a daily basis for well over a year before it started breaking... it exceeded all my expectations and I would have given that belt 5 stars. About a month ago I bought two more of what I thought were the exact same belt but when they arrived they seemed like they were thicker and made out of a different type of rubber. They both broke within a couple weeks of daily use and started splitting in the middle of several of the holes, even ones that were not used for the fastening. It seemed like the thicker rubber did not flex as well and just cracked and broke. I would give these two belts a zero star rating. I wish I could buy the original belt I got in 2012, but it seems like they may have been phased out.