I already own the Myrna in the "Vachetta" leather, so I was thrilled to see this offered in the "Buff".
I own the Gracie style in buff leather, so I think I understand the difference.  Vachetta is stiffer and
more substantial.  (My Myrnas never stretch, and run narrow).  Buff leather is softer, and has some give
to it.

I ordered a pair of these, hoping for a softer, more comfortable sandal.  They are just as stiff as my
first Myrnas, so they're going back.