Good shoes must always be comfortable and flexible and not cramp the feet, they need to have a shape that can create maximum freedom of movement for both the feet and toes; they must be lightweight so they do not overload the feet or tire the muscles; they must be made from materials that allow the feet to breathe and they must gently stimulate the sole of the foot; they must have the correct proportion between the heel and the sole to help improve their posture, making their first steps easier and they must NOT have anatomic arch supports until children are at least 3-4 years of age.