This is my third pair of Birkenstock Maori sandals. The first two pairs were purchased from the Birkenstock website. I can't see any difference in these from the others except the color. As usual, the fit is perfect. I have bronze, the black and now white.  I see no reason to doubt their authenticity. The were shipped from Germany in a Birkenstock box and, inside the box, they were wrapped in Birkenstock tissue paper. They had a Birkenstock hang tag.  I would definitely buy from this company again because the shoes are perfect and the price is good.