This zipper uses water-activated color-changing materials in the patterns on its tape and puller. In a dry state, the zipper displays its original color. When water droplets come into contact with the surface, the material becomes transparent. This design not only adds an element of fun and interactivity but also opens up more possibilities for creative expression in characters and patterns. For instance, the puller in the pictures shows the word “生存”（Survival）, which transforms into “牛仔”（Cowboy）upon contact with water, adding more creative expression to zipper design.