The first rule to remember is that the right athletic shoe should not require a breaking-in period. Shoes should feel comfortable as soon as you wear them. You should walk or run a few steps to make sure they remain comfortable. Other rules to follow include:

• Always try on athletic shoes after a workout or run or at the end of the day, when your feet will be at their largest (due to normal swelling).
  
  
• Measure both feet – not just one. The shoe should fit the largest foot.
  
  
• Wear the same type of sock you plan to wear for that sport or activity.
  
  
• You should be able to wiggle all of your toes, and there should be a half-inch between the longest toe and the end of the shoe (about the width of your thumb).
  
  
• The shoe should grip your heel firmly. The heel should not slip as you walk or run.
  
  
• Relace the shoes you try on, using a criss-crossing lace pattern. It is important to relace the shoes each time you put them on. This helps to provide a tight, secure fit.
  
  
• Replace worn shoes and bring your old shoes to the store. A knowledgeable sales associate can help guide you by examining the wear pattern of your old shoes.
  
  
• Do not buy new shoes immediately before a major game or race. While shoes should feel comfortable when you first try them on, your body needs some time to adjust to the structure of the new shoes. Allow two weeks of practice or regular use before wearing your shoes in a big event or long run.
  
  
• Keep in mind that foot size changes with age and weight.
  
  
• Buy a shoe for the fit, not the size. Shoes ought to feel snug and not be loose-fitting.
  
  
• When purchasing shoes for children, focus on good cushioning, support and protection. Never buy shoes that will squeeze their feet. A little added room is OK to compensate for growing.