Medela Contact Nipple Shields are a breastfeeding accessory designed to help with various breastfeeding challenges. They are typically used for mothers experiencing difficulties with latching, sore or cracked nipples, or to aid breastfeeding with certain conditions.Regarding the specific Medela Contact Nipple Shields in size L (2pcs), here is some general information on their usage:Ensure cleanliness: Before using the nipple shields, make sure to wash your hands thoroughly with soap and water to maintain good hygiene.Position the shield: Place the Medela Contact Nipple Shield over your nipple, aligning the cutout section with your baby's nose to allow them to breathe comfortably while feeding.Encourage latch: Gently bring your baby to your breast and help them latch onto the nipple shield. Ensure that they have a wide latch by aiming for their mouth to encompass as much of the areola (the darker area around the nipple) as possible.Observe feeding: Monitor the feeding session to ensure that your baby is actively nursing and swallowing milk. This indicates that they are obtaining an adequate milk supply.Seek professional help if needed: If you continue to experience difficulties with breastfeeding or have concerns about using nipple shields, consult with a lactation consultant or healthcare professional. They can provide further guidance, support, and assistance tailored to your specific situation.