US Size 46 typically refers to men's clothing, particularly jackets and suits. This size indicates a chest measurement of approximately 46 inches. It is commonly used in the context of formal wear, such as blazers and dress shirts, and can vary slightly between different brands and styles. In addition to jackets, US Size 46 can also apply to other clothing items like pants, where it usually corresponds to a waist measurement of around 40-42 inches. When shopping for clothing, it's important to check the specific sizing charts provided by brands, as sizes can differ across manufacturers and styles.