"90-Minute Cycle, 90% of Babies Actually Sleep!" Polly Moore / Naoko Narita ■ Price: ¥1,400 ■ Condition: New, Unread (with obi) I purchased this and stored it without reading it. It's a new, unused item with the obi, so I think you'll be able to use it with peace of mind. This is a popular book for those who are struggling with childcare and putting their babies to sleep. If you were looking for this, please consider it. Instant purchase OK. *Please only purchase if you understand that this item has been stored at home.