사실 반스는 이전에도 지디로 인해 반스를 꾸겨신는(->꾸겨 신는) 것이 유행하자 꾸겨신기(->꾸겨 신기)에 최적화된 공식 구겨신기 전용 신발 올드스쿨 뮬을 출시한 적이 있다고 한다. They say that VANS (brand name of Sneakers), in fact, had also released "Old Skool Mule," an official crumpled shoes optimized for wearing bent in the past , as it became popular when GD(G Dragon, Kpop idol) wore them. '꾸기다' & '구기다' are similar in meaning, but '꾸기다' has a stronger feeling of crumbling paper or clothing than '구기다'.