Underwiring

Underwiring refers to the use of stiff, usually metal or plastic, supports sewn into the bottom edge of the cups of a bra. These supports are typically shaped like a curve and run from the center gore, around the lower curve of the breast, to the side seams. The primary purpose of underwiring is to provide lift and support to the breasts, helping to shape the bust and prevent sagging. The underwire effectively creates a framework that separates and lifts the breasts, distributing their weight more evenly and reducing strain on the back and shoulders. It can also enhance cleavage by pushing the breasts upwards and inwards. The material used for underwiring varies, with metal being common for its durability and rigidity, while plastic offers a lighter and sometimes more flexible option. The construction of the bra involves inserting the underwire into a channel or casing made of fabric, which is then sewn securely into place. Properly fitted underwired bras are designed to sit smoothly against the ribcage and should not dig into the skin or cause discomfort. The presence of underwiring is a key feature in many styles of bras, particularly those designed for larger busts or for providing significant shaping and support.