MONSTA X - 12th Mini Album [REASON][4CD SET]

- SLEEVE COVER : 210 x 150 mm / 1 type (Different images for each category)
- PHOTO BOOK : 148 x 210 mm / 72p / 1 type (different images for each type)
- LYRIC BOOK : 148 x 210mm / 16p / 1 type (different images for each type)
- CD-R: 1 type (different image for each type)
- PHOTOCARD : 62 x 88 mm / Random 1ea out of 5 types (Different image per version)
- UNIT PHOTOCARD : 62 x 88 mm / Insert 1 type randomly out of 10 types (images are different for each version)

* Advance reservation benefits
- POST CARD : 100 x 150 mm / Random 1 out of 5 types (same image per version)
- 4 CUT PHOTO : 50 x 150 mm / Randomly insert 1 out of 5 types (same image for each version)
- FOLDED POSTER : 360 x 260 mm / Randomly insert 1 out of 4 types (same image for each version)