Cotton balls used for treating a child's umbilical hernia. Purchased in September 2025, approximately 5 were used, and the rest are being offered for sale. ● Product 　Iwatsuki Co., Ltd. 　Cotton Ball 　100% Absorbent Cotton 　50g 　#20 Please feel free to comment if you have any questions. If you are interested in purchasing, please take a look at my profile. Thank you.