This 27" Vislon Molded Plastic Jacket Zipper is a high-performance, separating (open-end) zipper designed specifically for jackets, coats, and outerwear. Known for exceptional durability, Vislon zippers use engineered molded plastic teeth, making them lighter than metal yet incredibly strong and resistant to corrosion, salt, moisture, and temperature changes. The zipper features a #5 tooth size (5.7 mm), the most popular size for jackets, providing smooth operation and long-lasting reliability. With sturdy polyester tape, this zipper is easy to sew and compatible with a broad range of fabrics used in apparel and gear. Equipped with a 1-way automatic lock slider, it ensures the zipper stays securely closed until intentionally pulled.