I was hesitant to buy shoes without trying them on, but I was pleasantly surprised. I usually wear a 11.5 or 12 depending on the manufacturer, I ordered 12 wide and it fits perfectly, true to size. The fit is very comfortable and surprisingly the shoe doesn't slip. I wore them last week in extreme conditions hunting in remote areas - driving, sandy and rocky terrain, boating, slippery decks and pine needle trails, always had a good grip. Very happy with this shoe, highly recommend.