Easy to Use: Place Drop-Ins Pre-Formed Liner or Original Liner into Nurser. Fill with Desired amount of breast milk or formulas. Place the nipple, retainer ring and cap onto the Nurser and tighten securely. Remove cap and feed baby. Discard Drop-Ins Pre-Formed Liner after use to ensure a fresh, clean bottle at every feeding. Warming Instructions: To warm liquid in Nurser, place Nurser under hot tap water or in pan of warm water removed from heat source. To warm liquid before placing in Nurser, heat liquid in separate container - Do Not Boil - and allow to cool for at least 15 minutes before pouring into liner.
Always refer to the actual package for the most accurate information