I can compare the difference I thought that Sun Sans has just started making their stuff cheaper and more uncomfortable because when my daughter tried them on they usually fit like gloves instead of poking her feet and rubbing them. Class was cheap, sole wasn't spongy like the Sun Sans, so I checked out Revain looking for a different style and came across reviews saying they were fake. I compared them and indeed I had a fake. So be careful and if the outsole says patent pending it is legal but if it says "Made in USA" is fake read the other reviews and you will see
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