This product is a two piece set of nylon zippers in size 5 with resin double sliders. It is designed for sewing crafts, clothing, and accessories, and is suitable for down jackets and other projects that require reliable, two way access. The zippers are openend with auto lock and can be used in DIY and work. Key benefits Reliable auto lock with two way operation to prevent accidental unzip and to allow venting from either end Durable nylon zipper tape combined with resin sliders for smooth, long lasting performance Double slider design enables opening from or bottom for convenience in wear or when layering Flexible length options to fit a range of garments and projects Pack of 2 zippers provides ready replacements or matching pieces for two projects Key attributes Type: openend zipper with auto lock Sliders: twoway, double slider, resin pulls Teeth/tape: nylon zipper Size: 5 # Lengths available: 80 cm, 90 cm, 100 cm, 120 cm, 150 cm Pack quantity: 2 pieces Suitable uses: sewing crafts, clothing, accessories, DIY projects Compatibility: designed for mid to heavier weight garments such as down jackets and coats Use cases Replacing a worn or broken zipper on a down jacket or winter coat to restore full function Adding a twoway vent or access point to a jacket, coat, or outerwear for adjustable warmth Incorporating into DIY sewing projects such as custom vests, bags, or cosplay garments that require reliable twoway opening and easy operation Performance notes Openend design allows full separation for easy wear and removal Auto lock helps keep the zipper closed when not in use Nylon tape with resin sliders provides smooth operation and durability across multiple uses This description reflects the product specifications and features as listed: two pieces, size 5 #, lengths 80/90/100/120/150 cm, double slider, resin zipper pulls, openend with auto lock and twoway operation, intended for down jackets, sewing crafts, clothing, and accessories.