Grant Waterproof Chelsea Boot

I bought these boots for my husband. I thought they would be good for causal wear with jeans and buttons ups. He typically wears a 10.5. Most of the reviews stated to go down at least a half size or even a whole size. The 9.5 wasn't available at the time I was shopping, so I went with the 10 (it's at least a half size down). As expected, they were too big. I checked back and a 9.5 became available (I'm sure a lot of guys are having to switch sizes for these boots.) . The 9.5 fit perfect. A whole size down. They truly do run big. He hasn't worn them yet so I can't comment on comfort and waterproofness.