Bias tape

Bias tape is a strip of fabric cut diagonally from a woven fabric, which allows it to be flexible and conform to curves. It is commonly used in sewing to finish raw edges, create decorative borders, or traverse seams neatly. Because of its diagonal cut, bias tape stretches slightly, making it ideal for finishing edges on curves like necklines or armholes. It comes in various widths and colors, and can be purchased ready-made or made at home. Its primary function is to provide a clean, professional look to the edges of a sewing project while protecting the fabric from fraying.