Im a size 9 in boots, but after reading the reviews I decided to base it on the sizing chart provided. According to it, I was a size 11. So at first I was a bit nervous about it but most reviews said that the product runs small so I thought ok. Just got them, and they're way bigger than expected, definitely shouldve gone for a 10 or even maybe my actual size which is 9. If it wasn't because I need them for Saturday Id return and get the correct size, bummer.