I am a true 9 and I am glad that I went with the other recommendations to go a half size up. I just received my 91/2 and they are perfect for working out running and walking if I had bought the 9 my toes would be hitting the top of the shoe which is not good for walking or cross training. So happy with these they are amazing and so comfortable. Go a half size up with what you normally wear if you plan on using these for working out and fitness.