The size fits right and is so comfortable to walk in. I am in my late 70s and like to walk a lot . The ball of My feet use to hurt from the pressure being put on the ball of my feet, but with the 4 mm drop on these Proterra shoes, I put my heel down first, so as there is no pressure on the ball of my foot. All my other shoes Had heels and the foot was always in a forward down hill slope and cased pressure on the front of my foot, but No more, since these shoes let your foot sit flat. I like these shoes very much and would recommend them.