You are looking at a very nice pair of the Famous Frye Harness boots size 11 U.S. which is a size 44.5 in EU and a size 10 in UK.
The boots measure as follows boot shaft heel to top 12 inches, heel to toe 11 3/4" and 4" wide in the foot box with a 1 1/2" inch tall heel.
This boot has the famous Biltrite Oil Resistant Sole and heels.
These boot are very popular, if you want them, you better get on it!
Thanks for looking!