Dr. Brown’s Natural Flow Options+ Level 1 Wide-Neck Teat is a great place to start with a slow, paced flow, engineered for a consistent rate. The breast-like shape encourages latch. Contoured teat shape and soft silicone give comfortable feeding experience and help avoid nipple confusion. The suggested age range for the Level 1 is 0 months+ but baby’s preferred flow rate may vary. Fits Dr. Brown’s Options+ Wide-Neck bottles. Dishwasher (top rack) and sterilizer safe and BPA free. * Not compatible with Dr. Brown's Options Wide Neck Bottles.