A size chart is a tool used to help individuals determine the correct size of clothing or footwear. It typically includes measurements for various sizes, such as small, medium, large, and extra-large, along with specific body measurements like chest, waist, and hip sizes. Size charts can vary between different brands and styles, making it essential to refer to the specific chart for accurate fitting. Using a size chart can improve the shopping experience by reducing the likelihood of purchasing items that do not fit properly. Many online retailers provide size charts on their websites, often alongside product descriptions. This ensures that customers can make informed decisions when selecting items from brands like Nike or Adidas.