Cotton/Maternity Record Case Refill Muji's "Cotton Maternity Record Case Refill Small" Brand new, unused. Stored at home. The following is quoted from the HP: You can organize maternity records, health insurance cards, etc. together. Comes with a D-ring that can be used to mark each refill. There are 4 card pockets, and they are vertically oriented for easy access. External size: Approximately 18x13cm (Internal size: Approximately 16x10.5cm. Depending on the amount and thickness of the items stored, the internal size may not fit.) Thank you.