These boots are very comfortable. Took me a day to get use to them, but after that they feel great. They also keep me warm, Ive used them in the snow when shoveling and they did awesome. I am usually a 37.5 in size, which is a 6.5 in the chart. I ordered 7.5 cause I figured that with the steel toe, too tight would hurt my toes. Plus, its better if I want to use thicker socks too. The size is perfect. They are a little bigger (cause I bought them bigger) but they are more comfortable like that.
So I would say size is accurate.