"Full-size" refers to an item that is made to standard dimensions or proportions, typically larger than a compact or mini version. This term is often used in various contexts, such as furniture, vehicles, and appliances, indicating that the item is designed to accommodate average needs or preferences. In the context of mattresses, a full-size mattress measures 54 inches wide by 75 inches long, providing ample space for single sleepers or couples. Similarly, full-size cars offer more interior space and comfort compared to smaller models, making them suitable for families or those needing extra room for passengers and cargo.