The term describes a specific bra cup size. It indicates that the bust measurement is approximately three inches larger than the underbust measurement. As an example, an individual with an underbust of 34 inches and a bust of 37 inches would generally wear this size.
This measurement offers a comfortable and supportive fit for many individuals. Historically, bra sizing aimed to provide adequate support and shape, and this particular size remains a common and frequently sought-after bra size across diverse body types. Proper fitting contributes to posture, comfort, and overall well-being.