So disappointed.... I have worn orthaheel tide flip flops for years,  my last 3 pair I have had no issues with but the only conclusion I can come to is that Vionic now runs the show.  They are cheaply made the sole is not very stable and the arch isn't as high as it used to be.  My old ones that are 6 years old are more stable and have more arch support then these do.  I hope that Vionic fixes the issues.  I know others love these but I am disappointed.