I usually wear a 9.5 in shoes and 10 in running shoes to allow room for my feet which swell when running. I ordered a size 9.5 in these Saucony Women's Cohesion 10 Running shoe / color Grey Coral . I wanted to try my usual size and pair with thin socks. Glad I did. I absolutely love the color which goes with many outfits. It is also a very light sneaker. Good sole to floor grip (no sliding when doing aerobics type workouts). One thing i noticed after 3 wears is that the right foot has a weird rise in the padding which I began to experience during running. I place some nice cushiony insoles within the shoe that resolved the issue. For this reason, i took 1 star off. It was like a defective insole - better quality control?? Nonetheless, i absolutely love these sneakers and will be ordering another pair soon!!!