Zipperstop Wholesale YKK&reg; 2 1/2" Doll Zipper YKK #3 Nylon Coil Zippers ~ Closed Bottom ~ 501 White (12 Zippers / Pack) Zipperstop Wholesale YKK 2 1/2" Doll Zipper YKK #3 Nylon Coil Zippers ~ Closed Bottom ~ 501 White (12 Zippers / Pack) Strong yet lightweight zipper. These nylon closed zippers is 3 1/2 inches long.