I wear size 7.5 W, or WW. I ordered the 7 in black/aqua. The length wasn't too bad. I had to return because they were way too tight for me. I'm not even sure an 8 would be wide enough for me. What I find interesting is inside the boot, where the suede meets the rubber, over the top of the foot. The lining stops. I can feel a little of the rubber. Then, the lining starts again. I don't know if this wouls affect warmth or not. I thought they looked kind of cute. They did not feel heavy to me. But, then, I was wearing them like a second skin.