A woman is waiting for her husband to come home. For some reason, she is reading a book titled “KARATE.” Her husband finds her in a bad mood. In her hand is a receipt showing that he has purchased an expensive ring. “Who did you buy it for?” she demands. The husband looks confused. She attacks him with karate moves she’s just learned from the book. She grabs him by the collar and shakes him. After some struggle, they become too tired to fight anymore. The husband opens the zipper of his jacket and presents her with a box containing the ring. It was a surprise 10th anniversary gift he had bought for her. The wife kisses him gently and smoothly pulls down the rest of the zipper. “Here’s a zipper that’s strong enough in a tough situation”

A woman is waiting for her husband to come home. For some reason, she is reading a book titled “KARATE.” Her husband finds her in a bad mood. In her hand is a receipt showing that he has purchased an expensive ring. “Who did you buy it for?” she demands. The husband looks confused. She attacks him with karate moves she’s just learned from the book. She grabs him by the collar and shakes him. After some struggle, they become too tired to fight anymore. The husband opens the zipper of his jacket and presents her with a box containing the ring. It was a surprise 10th anniversary gift he had bought for her. The wife kisses him gently and smoothly pulls down the rest of the zipper. “Here’s a zipper that’s strong enough in a tough situation”

YKK’s zippers are both smooth and tough. This aspect was effectively expressed through a couple’s fight.