The COSTUMAKERS General Purpose One Way Separating Zipper, Style 1703 in Black, is crafted with #2.5 nylon coil for strength and flexibility. Measuring 35cm (14"), it is ideal for bustier & halter tops, offering easy separation for garment openings. The lightweight design and durable polyester tape make it perfect for everyday wear, while the smooth-gliding slider ensures hassle-free operation.