Thank you for viewing! This is one Pigeon slim-type nipple, size M (round hole). I'm selling one of the two because my baby needed a larger size. I purchased it around August 2025. I will ship it without the box, so please consider this if you don't mind. ★ Depending on the size of the item, I may change the shipping method between Yu-Yu Mercari and Raku-Raku Mercari. ★ I am also selling on other sites, so I may delete the listing without notice even if you "like" it. ★ I will prioritize the person who purchases first, even if you comment. ★ Please consider this, understanding that it is stored at home. ★ I am decluttering my home and selling various items, so please take a look! ★ I will recycle home materials for shipping, so please understand. I hope to pass it on to someone who needs it, so thank you very much!