Pigeon's "Mother's Milk Realization" SS size nipples. One is the old type, which I opened new this summer. The others were all purchased used, with about 2 months of use. I also used them during my newborn's period. They were sterilized with steam and Milton. Shipping via Yu-Packet Post Mini is planned. Set of 6 silicone wide-mouth bottle nipples. - Quantity: Set of 6 - Material: Silicone - Design: Wide-mouth type - Application: For baby bottle nipples Thank you for looking.