Clean the nipple shields before first use and before each subsequent use. Before first use, boil the nipple shields in water for 5 minutes to ensure good hygiene. For sterilisation, you can use one of the following methods: steam sterilisation (electric or microwave steriliser, following the manufacturer's instructions) or in boiling water or a sterilising solution for at least 5 minutes. Do not use abrasive agents. To store the sterilised nipple shield hygienically, place it in the closed, sterilised carry case. Check the nipple shield before each use and replace it as soon as it shows any defects. 1. Wash your hands! 2. Turn the wings inside out. Place the nipple shield on the nipple and smooth the wings down. 4. Before breastfeeding, make sure the nipple shield fits the size of the nipple perfectly and adheres properly.