Light, thin, and soft, YKK's smallest zipper *1. This thin and small zipper is suitable for inside pocket applications. YKK's No.3 coil zipper is four times more flexible than the standard product. It is also about 40% lighter and thinner*2. In addition to the inside pockets of suit jackets, where it has been used for many years, this product is also recommended for use in the pockets of T-shirts and jacket ventilation areas. We hope that you will increase the enjoyment of your clothes by using them in areas where they have not been used before.

*1 Among our products as of February 2021 

*2 Comparison with coil fastener No.3 standard product