#5 size Emmaline Bags Brand Zipper-By-The-Yard cut in a 10 YARD Length. These are continuous zipper coil, and you can put zipper pulls on from either direction to make double-pull zippers. Cut them as long or as short as needed. Zipper pulls are not included, but are sold separately.
Easy to sew nylon coil with the look of metal 2 way pulls, so you can add pulls from either direction.