I did not read the fine print --  the sole is man-made. It is very slick even on carpet. If that were only issue for me, I might keep these and see what I could do to rough up the bottom, but the toe box is also a bit tight in the width for my wide toes.  Probably not an issue for an average foot. Got the Lemon /Cow and the color is just as it appears -- a nice tinge of pale yellow-green that adds so much more accent than plain tan boots would.