International sizes refer to standardized measurements used to categorize clothing, shoes, and other wearable items across different countries. These sizes can vary significantly, as each region may have its own sizing system, such as US, UK, EU, and JP. This can lead to confusion for consumers when shopping internationally, as a size labeled in one country may not correspond to the same size in another. To help navigate these differences, many brands provide size conversion charts that translate sizes from one system to another. These charts typically include measurements in inches or centimeters for chest, waist, and hip dimensions, making it easier for shoppers to find the right fit regardless of where they are purchasing from.