I might like it if it were wide enough. But, since it's not, I can't really evaluate it and have to rate it based on how it does fit. I ordered the E - which is my size. I could just get them on with nylons on. My foot wouldn't go in with regular socks, let alone thicker or warmer ones. The length was fine. I do have a tall instep and arch - the boot was snug in that area, but did fit.<br /><br />In terms of the shaft, it was as expected. I have a 17.5 calve in a size 10, and it just fit. it might fit up to 18 on a 10, but certainly no larger.