I wear an 11 in everything! I have an average width foot, but it's long! I need the length of an 11. These are HUGE! I have at least an extra inch in the back and they are so big that my foot flops around in them! I thought they were a men's shoe. I wanted to exchange them for a smaller size, but that's not an option. It's just a refund. I am disappointed. They are perfect for a different look with casual shorts. I usually wear Old Navy flip flops and these are at least 2 sizes bigger than Old Navy if you need a reference as to their size. I have the Sidewalk Surfers and they are a perfect fit.