Medela nipple shield (nipple protector), 1 piece. I only used it once when I gave birth for the first time, but I switched to formula feeding soon after, so I think it's relatively clean. Recommended for those with inverted nipples or nipples that are difficult for the baby to latch onto. Size is M (20mm). Cleaned and sterilized. I will pack carefully, but please purchase only if you understand that it has been stored at home. Please be sure to wash and sterilize before use.