I ordered a pair of these from Amazon in size 11, the same size I wear in Nunn Bush, Itasca, and Merrel.  When they arrived and I tried to get my foot into them, they proved to be way too small.  I figured I would need a 12.  All Amazon had was an 11.5 so I thought I would give it a go.  Even a half size larger didn't prove to be enough.  I questioned if even 12 would have worked.  A very nice looking shoe but too bad about the sizing problem.  Amazon, in their typical fashion (at least for me), handled the returns and refunds promptly and with no problems.  Wound up catching some Itascas and Merrels on sale at Gander Mountain at really good prices.  A side note, Itascas are a "cheaply" made shoe but good enough to go out to feed the dogs in.