They support our weight and carry us from place to place. We may wear shoes that are not right for the size and shape of our feet or for our activities. Many people do not give much thought to shoe selection. If you only consider style and not fit when buying shoes, you may invite problems with your feet. Once a year measure both feet by length and width.
Foot size changes with age.
Also, both feet may not be exactly the same size. Measure your feet at the middle or end of the day to account for normal swelling. Select the shoe size that fits your largest foot. If necessary, use an insole to adjust the size for the smaller foot. Be aware that shoe sizes vary from brand to brand.