Clean the nipple shields before first use and before each subsequent use. Before first use, boil the nipple shields in water for 5 minutes. This ensures good hygiene. For sterilization, one of the following methods can be used: steam sterilization (using an electric or microwave-safe sterilizer according to the manufacturer's instructions) or sterilization in boiling water or a sterilizing solution for at least 5 minutes. Do not use abrasive agents. To hygienically store the sterilized nipple shield, place it in the sterilized, closed carrying case. Check the nipple shield before each use. Replace it as soon as it shows any signs of wear. 1. Wash your hands! 2. Turn the wings inside out. Place the nipple shield over the nipple and smooth down the wings. 4. Before breastfeeding, ensure that the nipple shield fits the nipple perfectly and adheres well.