COATS And 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 26in zipper. Available in a variety of colors each sold separately. Made in USA.