Of course, as soon as you hear the word, Dr. Brown, you know it’s the best when it comes to baby bottle care. This is a four pack, narrow 2 ounce just perfect for that newborn made a super soft, tirade silicone. Each nipple level provides a consistent flow rate contents of this package are for 2 ounce bottles for preemie flow silicone nipples, two cleaning brushes and instructions Bin one