The length is a true 6B but the girth and fit is like a size 8! These are ginormous! I thought they were cute until I tried them on. It comes with like a thin 2-3mm eva sock insert but I inserted an extra 5mm toe to heel insert and they still were too big? Even with all the extra added padding the heel never stays down at all. I kept slipping straight out of them when I tried to walk. They were impossible. And if you stand straight the shaft is so far foward that all you see is straight down the front. If it snowed or rained, it would go straight on down to my feet so this defeats the purpose of these. Even if your legs are straight and knees are now locked the shaft position is way off and its kind of ridiculously big even for a pull on boot. I thought the chelsea elastic was functiinal but its not. Its part of the rubber mold. Had to return these