Eric wrote an answer about Salomon Techamphibian Sandal - Men's on March 13, 2009
I got the size 13 and I wear a 13 in regular shoes. they fit great on my (slightly) narrow foot. as for the color I think the Autobahn adds some grey, and the other is more blue, but you wouldn't notice much difference unless they were side by side. I am ordering my second pair before they go and discontinue it on me.love em.