Pigeon Breastfeeding Real Nursing Nipples This is a set of 6 nipples: 2 each of SS, S, and M sizes. The nipples will be wrapped in plastic wrap and placed in a Ziploc bag. The box will be folded and included. All were purchased new in October of last year for my baby. They were sterilized and dried after each use. My baby was primarily on formula with some breast milk, so they weren't used very often, but the S size nipples have some yellowing. I used them during the age ranges indicated on the box. After my baby outgrew them, I sterilized and dried them, wrapped them in plastic wrap, and stored them in the box. I can offer a discount on shipping if you purchase them with other items. Please comment if you're interested! Please feel free to ask any questions. Thank you.