The third installment of the collaboration series between Mitsukoshi Isetan's private brand, NUMBER TWENTY-ONE, and artist Mutsumi Kagoshima has been released, featuring PORTER as a collaborator. Available exclusively at Isetan from September 14th, this collaboration features three different designs specially drawn by Mutsumi Kagoshima printed on three different PORTER bags: a backpack (35,000 yen), a helmet bag medium (30,000 yen), and a helmet bag small (25,000 yen). The three designs, Five Flowers (with a gray lining), Seven Sisters, and Toritohana, are featured on the exterior and lining of the bags, respectively. Available at the handbag/promotion section on the first floor of the main building of Isetan Shinjuku Main Store and the Isetan online store.