International sizing refers to the various systems used to categorize clothing and footwear sizes across different countries. These systems can vary significantly, leading to confusion for consumers when shopping internationally. For example, a size 8 in the United States may correspond to a size 12 in Australia or a size 40 in Europe. To address these discrepancies, many brands provide size conversion charts that help customers find their equivalent size in different regions. Understanding international sizing is essential for online shopping, as it ensures a better fit and reduces the likelihood of returns due to sizing issues.