1. Begin by selecting a flange size based on your nipple diameter. It should fit comfortably around your nipple without causing any discomfort or pain.
2. Insert your nipple into the flange and ensure that it fits snugly but not too tightly. You should see minimal areola being pulled into the flange during pumping.
3. Pay attention to any signs of discomfort, such as rubbing or pinching, which may indicate that the flange size is incorrect.
4. If necessary, try a different flange size until you find the one that provides the most comfortable and efficient pumping experience.
5. Consider consulting with a lactation consultant or breastfeeding specialist for additional guidance on flange sizing if you're unsure or experiencing difficulties.