AiryString® was born through the development of a tapeless zipper and a special sewing machine that can sew the elements directly onto the fabric. AiryString® creates a sense of unity between the zipper and the fabric and offers customers unprecedented design possibilities for their products. Other features include the elimination of tape, which contributes to the weight reduction of the final product. In addition, AiryString® easily follows the fabric and is highly flexible. Unlike ordinary zippers, each part of this item is supplied by YKK and sewn on with a special sewing machine. We will work together with the customer from the prototype to the introduction of the sewing machine to the sewing factory.