At Dr. Browns, our focus has always been to create innovative feeding products to promote good health and optimal nutrition for baby. Designed by a doctor in 1996 and patented in 1997, Dr. Browns Natural Flow is the only baby bottle to feature an internal vent system that: helps preserve vitamins C, A, and E by minimizing oxidation of breastmilk and formula; provides positive pressure vacuum free feeding similar to breastfeeding; and helps reduce colic, spit up, burping and gas by eliminating negative pressure and air bubbles. Dr. Browns Natural Flow baby bottles are BPA free and contain no PVC, lead or phthalates, and have received numerous design awards and acclaim from the medical community. In fact, many of our bottles go to hospitals, NICUs, and doctor offices. Most important, moms are talking and theyre sharing with excitement the improved feeding habits of their babies. In keeping with the standards of our baby bottle, Dr. Browns products offer a unique design that yields a better functionality for mom and good health for baby. To maintain a brand that moms can rely on, we place a heavy focus on product research and development to ensure every product achieves the best possible result. This means that we invest as much time as necessary to create quality feeding products with distinctive health related benefits. Two replacement silicone nipples, exclusively for Dr. Brown's Natural Flow Standard baby bottles. Level 2 is ideal for feeding infants 3 months +. FROM THE MANUFACTURER At Dr. Brown’s, our focus has always been to create innovative feeding products to promote good health and optimal nutrition for baby. Designed by a doctor in 1996 and patented in 1997, Dr. Brown’s Natural Flow is the only baby bottle to feature an internal vent system that: helps preserve vitamins C, A, & E by minimizing oxidation of breastmilk and formula; provides positive-pressure vacuum-free feeding similar to breastfeeding; and helps reduce colic, spit-up, burping and gas by eliminating negative pressure and air bubbles. Dr. Brown’s Natural Flow baby bottles are BPA-free and contain no PVC, lead or phthalates, and have received numerous design awards and acclaim from the medical community. In fact, many of our bottles go to hospitals, NICUs, and doctor offices. Most important, moms are talking and they’re sharing with excitement the improved feeding habits of their babies. In keeping with the standards of our baby bottle, Dr. Brown’s products offer a unique design that yields a better functionality for mom and good health for baby. To maintain a brand that moms can rely on, we place a heavy focus on product research and development to ensure every product achieves the best possible result. This means that we invest as much time as necessary to create quality feeding products with distinctive health-related benefits. Two replacement silicone nipples, exclusively for Dr. Brown's Natural Flow Standard baby bottles. Level-2 is ideal for feeding infants 3 months +.For babies 3 months and older. Dishwasher safe. Supersoft and made of high grade silicone. Made for Dr. Brown's standard bottles. Standard Level 2 2 pack replacement nipple. For babies 3 months and older. Dishwasher safe. Supersoft and made of high grade silicone. Made for Dr. Brown's standard bottles. Standard Level 2. Two pack replacement nipple. Silicone.Liquid Flow Speed Description: Medium Flow. Bottle Nipple Type: Y-Cut Nipple. Material: BPA Free, Phthalate Free, Latex Free, Lead Free. Size: 2 Count. Brand: Dr. Brown's. Best Sellers Rank: #19,310 in Baby. Customer Reviews: 4.8 4.8 out of 5 stars 1,337 ratings 4.8 out of 5 stars. : B003KMWATY. Item Weight: ?0.48 ounces. Is portable: ?No. Bottle nipple type: ?Y-Cut Nipple. Dishwasher safe: ?No. Batteries required: ?No. Style: ?Level 2. Number Of Items: ?2. Material free: ?Bisphenol A Free. Material Type: ?BPA Free, Phthalate Free, Latex Free, Lead Free. Target gender: ?Unisex. Safety warning: ?Before first use: 1. Use clean hands and clean surfaces when handling. 2. Place nipple in an open container of boiling water for five minutes. If boiled longer, the nipple can deteriorate. 3. Be sure the nipple hole is clean. After first use: Nipples may be cleaned in a dishwasher-top rack only. Water temperature should not exceed 140 degrees F. Is Discontinued By Manufacturer: ?No. Item model number: ?322-P3. Product Dimensions: ?1.5 x 3.8 x 5.1 inches.