Two way zipper- classic, 2 way slider design (both pullers go up and down). Zippers are strong and reliable. Zip's size reflects the length of the teeth (the fabric part is a bit longer). Open end - you will get two, separate parts of the zip when fully unfastened. will be ideal for jackets, hoodies, fleeces etc. Universal type.Strong enough for leather garment as well.Zip teeth fitted on a strong, polyester ribbon. The zipper pulls is easy to install without complex tools or sewing skills.