The type of zipper is also known as a double-slider zipper or two-way zipper. This design features two zipper pulls that can move towards each other and meet in the center, allowing the zipper to be opened from either end while still being attached at both ends.

Uses of Double-Slider Zippers

1. Jackets and Coats: Allows for ventilation from either end and easier access to inner pockets or layers without fully unzipping the garment.
2. Luggage and Backpacks: Provides flexible access to contents from different points and allows the bag to be securely closed while offering multiple access points.
3. Tents: Facilitates adjustable ventilation and convenient entry and exit points.
4. Sleeping Bags: Allows for temperature regulation and easier entry and exit.
5. Outdoor Gear: Common in items like raincoats and technical gear where adjustable openings are beneficial for comfort and utility.
6. Furniture Covers: Enables easier covering and uncovering of items like sofas or large cushions.

This type of zipper is particularly useful for its versatility and convenience, providing easy access and adjustable openings in a wide range of applications.