In Magento 2, a size chart is a visual representation or table that provides information about the sizes and measurements of products, such as clothing, shoes, or accessories. It helps customers determine the appropriate size to choose when making a purchase. The size chart Magento 2 typically includes measurements such as bust, waist, hips, inseam, shoulder width, sleeve length, and so on. The specific measurements included in the size chart depend on the type of product being sold.