Pigeon Mother's Milk Realization Baby Bottle Set of 2 Both are brand new and unused. The included nipples are SS size. Product Description Material: Plastic Sizes: 80ml, 160ml, one of each ・The Mother's Milk Realization baby bottle is designed to allow babies to "drink naturally," the result of over 60 years of research. ・Babies can drink with the natural mouth movements they are born with, making it easy to use in conjunction with breastfeeding, and allowing you to continue breastfeeding with peace of mind. ●Supports the three principles of feeding: "Attachment," "Sucking," and "Swallowing." "Attachment" support: Soft texture that mimics the breast and does not hinder smooth tongue movement. "Sucking" support: A curve that fits snugly in the mouth and a latch-on guide. "Swallowing" support: Nipple hole shape designed to match "growth and development." ●No. 1 in use at hospitals and maternity clinics (※According to Pigeon research) ●The plastic is high-quality plastic used in medical settings. It is also BPA-free and made with safe materials.