I have the Longwings in Crimson and love the way the Leo last fits. I wear an 11.5 in Grant Stone which is .5 size down from my Chippewa and Red Wings. Also a half size down from most of my sneakers. The Grant Stone team were great at giving sizing advice when I initially ordered! I also have the Diesel Boot in Saddle Tan Veg. Can't speak highly enough about the construction and the color! Same sizing for these as they are formed on the same last. 11.5 works great for me.