The word [찐][t͡ɕin] is a new Korean word meaning "THE REAL AMONG THE REAL." The ZZIINN brand is a new golf ball brand created in Korea. By reducing the weight of the core and increasing the initial rebound, it was manufactured so that a golfer who hits a drive of 200 yards will fly about 20 yards farther if they swing the same way. There is an effect of increasing the distance by about 10% for all clubs. It will be the best choice for women and seniors with short distances, and it will also be a secret weapon.