A "Size Guide" is a helpful tool that provides measurements and dimensions for clothing, shoes, or other products. It typically includes information on how to measure yourself accurately, along with a chart that correlates those measurements to specific sizes. This ensures that customers can select the right fit when shopping online or in stores. Using a size guide can reduce the chances of ordering items that are too big or too small. Many brands, including clothing retailers and shoe manufacturers, offer size guides on their websites to assist customers in making informed decisions about their purchases.