This is a set of two Yoongi postcards from the BTS exhibition "O, n, e, u, l" (오늘) goods held in 2018. Originally, it was a complete set, but the spine came off due to aging, so I am selling them separately. The size is 17.7 cm in length and 12.5 cm in width. The thickness is just under 1 mm, and they are quite sturdy. I will ship them with measures to prevent water damage and bending. Group Name...BTS Member Name...SUGA