I have owned a Tan pair of these for almost 3 years.  They are ugly but comfortable and I really love them.  When I saw this pair of Crocs Walu in a really cool Charcoal color I had to order them.  Upon arrival they looked great and were identical to my other pair except for the color.  BUT when I put them on I immediately knew they were too large.  Almost one size too big.  When I walked my heel slipped in and out of the back of the shoe with each step.  I couldnt believe it.  Two pairs of the exact same shoe, in the same size 12, but in reality one was bigger than the other.  Upon closer inspection the only difference between the two, besides color, was where they were made.  My existing pair was made in Mexico.  This pair was made in Vietnam.  I normally wear a size 11 wide in almost everything.  The lesson learned from this is Crocs Walu from Vietnam run true to size, and Crocs Walu made in Mexico run a size small.