I took the advise of other reviews and ordered at least 2 sizes up and it will work out ok although wish I had ordered 3 sizes bigger instead of 2. (Usually a 9 1/2 and ordered the size 12 and it just barely fit). Since this is for a Halloween costume only purchase the poor quality and smell didn't matter as much obviously. I washed the shoes twice to get rid of the strong rubber chemical smell and it worked somewhat but the shoes turned yellow around the base of the shoe I assume from glue leaking.