Foldover elastics (FOE) are commonly used in lingerie, including female underwear, due to their versatility, comfort, and aesthetic appeal. These elastics are designed to fold in half along a groove in the center, creating a smooth, neat finish for raw fabric edges. This makes them perfect for lingerie bindings along the waist, legs, or neckline. The elastic offers a balance of flexibility and softness, making it comfortable for intimate wear while also providing a snug fit.

FOEs are often available with different finishes, such as a shiny or matte surface, allowing for aesthetic variety depending on the design requirements. Some variants also come with decorative edges, like scalloped or picot trims, adding a delicate touch to the garment. These elastics ensure that seams lie flat and maintain elasticity, even after repeated washing and wearing, making them ideal for use in high-stretch fabrics like those used in bralettes, panties, or activewear​