My feet stopped growing a LONG time ago, and I know my shoe size: 9.5 or 10.0.

Accordingly, I ordered these in a 10D. When I received them, I found that I could barely even get them on my feet, even wearing only a mid-weight sock and even with considerable struggle. Fortunately, Amazon makes returns and exchanges easy, so I ordered another pair in a different size: 11.5D. These will work, but if I had to do it over, I'd order a 12 so that I could wear them with a heavier pair of socks for winter warmth.

Amazing.... 50 or so pairs of shoes in my closet say I'm a 9 1/2 or 10, but these say I'm an 11.5 or 12. Hah! Order a much larger size than you'd normally wear, I advise.

Beyond the sizing issues, these are a terrific value for the price. Well-constructed, warm, good traction, easy to slip your feet into (once you've got a pair that fits). Probably not the boots I'd wear on an extended hike across the glaciers of Antarctica, but great for throwing on quickly when the dogs are in a hurry for a walk on a cold winter morning.

I'd give them a 5 star rating without the sizing issues.