A California King bed is a large mattress size designed for taller individuals or those who prefer extra legroom. It measures 72 inches wide by 84 inches long, making it longer than a standard King bed, which is 76 inches wide and 80 inches long. This extra length provides additional space for comfort while sleeping. The California King bed is ideal for spacious bedrooms and is often paired with larger bed frames and bedding. It accommodates couples who enjoy more personal space or individuals who like to stretch out while sleeping. This mattress size is popular in many homes across the United States.