I normally love running in mizuno shoes but these didn't quite work out for me. After multiple runs I noticed I was experiencing pain in my lower back on the right side. I am not sure if it was a defect in the specific shoes I received, possibly the way I run(I have previously broken my ankle that undoubtedly has affected my stride), or the combination of both. Either way I have purchased different models of mizuno's and other brands since and the pain is gone.