A size chart is a tool used to help individuals determine the appropriate size of clothing or footwear. It typically includes measurements for various sizes, such as small, medium, large, and extra-large, along with corresponding body measurements like chest, waist, and hip sizes. This ensures that customers can find the best fit for their body type. Size charts can vary between different brands and styles, so it's important to refer to the specific chart provided by the manufacturer. Many online retailers, including fashion brands and shoe companies, offer size charts to assist shoppers in making informed decisions before purchasing items.