**I'm selling because they just didn't fit me quite right. I made an extra hole for the straps. I wore them a few times in the 2 weeks or so that I have had them. Below is a description from the Birkenstock site.** The BIRKENSTOCK Arizona Grip is the legendary two-strap design from BIRKENSTOCK. Iconic style with the signature comfort of the BIRKENSTOCK footbed. This style features a rubber grip sole and a subtle patina made from high-quality, soft natural leather. Anatomically shaped cork-latex footbed Upper: natural leather Footbed lining: suede Sole: EVA; natural rubber Details: two straps, each with an individually adjustable metal pin buckle “Made in Germany”