I am around 56 and I wear a size 8 in clothes! I am normally Size 5 1/2 or 6. They run a little big. Also when I put them in my ear one of the ear buds makes a weird clicking noise thats kind of annoying. The good part is even with this I really like the shoe, the fit and feel are very good. He never complained once about them hurting his feet after wearing them all day. The straps on the top are adjustable which is great! Hoping they allow a return. These boats leak a little air through the valves but like I said just bring the little Intex pump with you and put air in the boat whenever you feel it needs some. Besides the earphones and cable, 3 different tip sizes/profiles are included.