COATS&CLARK-Zipper. Coats Parka Dual-Separating Zipper is a separating; polyester; molded; sport-weight zipper with two sliders so that it can be opened from both the top and bottom. It is especially suitable for longer length jackets; coats; ski suits and for all types of action sportswear. This package contains one 28in zipper. Available in a variety of colors: each sold separately. Made in USA.