This guide provides information for babies born in December, including monthly childcare tips, clothing suggestions, checkups, timing for baby food and teeth brushing, and necessary preparations. It seems to be out of print now, so I can't offer a significant discount. * To reduce shipping costs, I will fold it as compactly as possible for shipping. * I may reuse packaging materials. * I will ship promptly after purchase, but due to circumstances, I may not be able to ship during long holidays (Golden Week, Obon, New Year's holidays, etc.). Shipping will resume after the holidays. Thank you for your understanding. * After purchase, I may change the shipping method between Yu-Yu Mercari Bin and Rakuraku Mercari Bin without prior notice. If you have any issues with this, please let me know in advance.