I buy a half size larger.  Perfect fit for me, I have a narrow foot.  No liner, you can feel the breeze.  Perfect for hot weather.  Well made.  Has a shank and don't bend at the arch like cheap boots.  Your arch is non flexible.  A good boot should never flex at the arch but at the front foot pad.  A lot of brand names now are going cheap.  These are made right and breathable.  Good sole and last over a year with daily hard use.  I have been buying these for over 4 years.