Finish your piece with a professional, reliable closure using the COSTUMAKERS 50 cm (20 in) two-way separating zipper in navy. Built with #2.5 nylon coil teeth on reinforced polyester tape, this light weight zipper glides smoothly, resists corrosion and UV fading, and withstands repeated machine-wash cycles. Precision-cut tape keeps width consistent for hassle-free installation, while the ergonomic pull lets wearers suit up in seconds. Ideal for jackets, vests and activewear layers, every batch is tension-tested and slider-fatigue inspected so your garments look sharp and perform season after season. Whether you’re upgrading a vintage find, sewing a bespoke outfit, or completing a production run, choose COSTUMAKERS for tight tolerances, colour consistency, and dependable long-term performance.