I wanted to see the difference between my normal size and a half size smaller than my normal size so I ordered 8.5 and 8.8 fit but it was very tight and I liked the narrow part was not around the heel. 8.5, my true size, was perfect. The extra space in the toe area is good for you so that your feet can breathe better. The heel is also better, even if the difference is only 0.5 sizes. Don't forget to wear thick socks in winter. I tried on thick socks in my true size and the shoes are still comfortable. Be sure to stick to your true size. I love the black/black color war. I also have the gray EM version. love these shoes. They are my favourites. Lightweight, comfortable and look great!