I bought this shoe because it is lightweight, flexible, attractive, and vegan as well.  It does not disappoint.  My feet feel like they are protected, but they also feel free to bend and flex.  I bought size 7.5 in the Dark Shadow color and found it to be true to size.  They also make my feet look graceful because of the design and they way they build muscles and flexibility in the feet.  I've done mostly walking, but also some running and biking in these and haven't had any real problems - just a little pain in my knees, but I'm hoping that will go away over time.