"Full-size" typically refers to an item that is designed to be the standard or complete size for its category. For example, in the context of mattresses, a full-size mattress measures 54 inches wide by 75 inches long, providing ample space for one person or a cozy fit for two. This size is often chosen for guest rooms or smaller bedrooms. In the automotive world, "full-size" describes larger vehicles, such as SUVs or sedans, that offer more interior space and comfort. Full-size cars usually have a longer wheelbase and more powerful engines compared to compact models, making them suitable for families or those needing extra cargo capacity.