The Zipper Slider, mesh 5 and navy blue, is the sliding piece that runs along the teeth of a nylon zipper, used to replace broken or lost sliders without needing to replace the entire zipper. Mesh 5 corresponds to the standard thickness of the zipper teeth, making it essential to choose the slider with the correct mesh to ensure smooth sliding. The navy blue tone is an elegant and discreet color, often used in wider zippers on uniforms, jackets, and more formal style bags. It is a small, indispensable repair accessory for anyone working with zippers in sewing and leather goods.