Zipperstop Wholesale YKK 8" Water Repellent Zipper YKK #5 Water- Repellent Closed Bottom - 580 Black (1 Zipper / Pack) Zipperstop Wholesale YKK 8" Water Repellent Zipper YKK #5 Water- Repellent Closed Bottom 580 Black (1 Zipper / Pack) A special coating is added to this zipper to make it water resistant while maintaining durability. Repels water but is not waterproof.