binding

A binding is a narrow strip of fabric sewn over the raw edge of a garment to enclose it, neaten it, and prevent fraying. It serves both a functional and aesthetic purpose, transforming an otherwise exposed and vulnerable seam into a finished edge that can withstand repeated wear and washing. The binding itself is typically cut on the bias (at a 45-degree angle to the grain) so it stretches slightly and molds smoothly around curves.

Bindings come in several forms. A self-binding uses fabric cut from the same garment, folding it back on itself. Contrasting bindings, cut from separate fabric, add a deliberate design element. Pre-made binding tape is available in cotton, bias-cut linen, and synthetic blends, and comes in widths from half an inch to two inches. Seam binding, narrower and designed purely for strength, appears on inside seams where appearance matters less. Hong Kong binding involves wrapping a thin strip around the seam allowance rather than folding it in half, creating a very flat finish used in tailoring.

The binding is sewn using a specific technique. The raw edge is enclosed within the folded or doubled binding strip, then stitched in place, usually with a single line of stitching that catches both layers. On garments made for retail, this operation is performed on industrial sergers or special binding machines that feed and fold the binding automatically while stitching. Hand-sewn bindings require more time but remain standard in high-end tailoring.

Bindings are essential on armholes, necklines, and hems where the fabric is cut through its thickness. They appear frequently on children's clothing, activewear, and unlined jackets. On knit garments, binding offers an alternative to ribbing. The choice of binding width, material, and color affects both durability and visual weight of the finished seam.

Common failures include puckering, which occurs when the binding is sewn under tension or the fabric underneath shifts during stitching; fraying of the binding itself if the edges are not properly secured; and peeling away after washing if stitching tension was too loose or thread quality was poor. Pressing the binding flat after stitching, and ensuring adequate thread tension, prevents most problems.