I bought these boots in an 8. I usually wear a 7 and a half so I sized up. The boots themselves fit me fine. They expand to fit wide calves too. But my goodness they stink. The minute I opened the box I was overpowered with the smell of rubber. I realize they are rubber rain boots but wow the smell. I hope maybe the smell will go away with time. For now anytime I walk by them I get a heavy aroma of rubber. We will see.