The A5 size paper letter fits perfectly in three folds. It is a double envelope with thin paper that will be like when sending with a single sheet.
Specifications:
Midori Notebook Haramaki A6: Navy Blue
RM148.20
Midori Notebook Haramaki A6: Yellow
Midori Notebook Haramaki A6: Two-Tone Lilac
Midori Book Band Pen Case for B6: Mesh Brown
RM57.00
Midori Book Band Pen Case for B6: Mesh Green