The COSTUMAKERS Activewear One Way Separating Zipper 23cm (9") - White - 1760 is engineered for projects needing a reliable closure. It features #5 nylon coil; medium weight; one way separating; for jacket and vest use offering both performance and ease of installation. To install, stabilise the zipper area with interfacing or stay tape, baste to verify alignment, and stitch close to the teeth or coil with a zipper foot. After sewing, test the pull or slider travel to confirm smooth operation. Pair with matching thread for an integrated look or a contrasting tone for accentuated topstitching. Care as directed by the base fabric; avoid direct heat on metal or nylon components during pressing. Keep a few essential lengths and colours on hand to streamline your workflow.