This is a versatile multi-case with various uses. It can be used as a passbook case, a mother and child health handbook case, or even a stamp book case, mask case, or tablet case. The lid is made deep to allow for flexibility in what you put inside, so there are no hooks or buttons. This allows for smooth insertion and removal. After being made into a bag shape, the edges are sewn for durability! Size: 23cm wide x 15cm long x 2cm depth Stamp book pouch, stamp book cover Stamp book holder, stamp book case, multi-case Floral pattern Kinari no MUJI (Muji) Liniere Yumi Ishikawa Kurashi no Dōguten (Lifestyle Goods Store) Tennen Seikatsu (Natural Living) Hokuō Kurashi no Dōguten (Nordic Lifestyle Goods Store) Studio CLIP studio CLIP tumugu ichi fog linen work Masashichi Nakagawa Shoten Kurashiki Design check&strip Masako Ito Ayu Ohashi For those who like these brands/styles.