I ordered a size up per the suggestions in the reviews before me. The one size up fit perfect. For the quality of the shoe, not that it's poor but the plastic is hard. Not like a true jelly. And as a result, the front straps have already begun to break. I feel like the plastic doesn't allow for flex or bend so when walking those straps begin to crack and then break away. We are down three and the shoes have only been worn for a couple weeks. I will not buy again and I do not recommend.