・This is a Pigeon suction device. It has been sterilized, but will be sterilized again by boiling before shipping. Please refrain from purchasing if you are overly concerned about cleanliness. Pigeon nipple shields, size M (13-16mm), pack of 2, are perfect for breastfeeding support. - Brand: Pigeon - Model: Nipple Shield - Size: M (13-16mm) - Quantity: 2 pieces Thank you for looking.