Please note that Dr. Brown's updated the design of their glass bottles and nipples in 2019, from the Options line to the new Options .  Older Options wide neck nipples will not fit the Options bottles, and vice versa. You must use Options nipples with Options bottles, and Options nipples with Options bottles.

These Dr. Brown's nipples fit the older Wide Neck Options Dr. Brown's bottles. NOT COMPATIBLE WITH CURRENT DR. BROWN'S WIDE NECK BOTTLES.