Medela Contact Nipple Shields are specialized breastfeeding aids designed to help mothers experiencing latching difficulties or nipple discomfort. These medium-sized (20mm) shields are made from soft, BPA-free silicone and come with a protective storage case. The product comes in medium size (20mm) and includes two nipple shields per package. The shields are made from soft, medical-grade silicone that is BPA-free and safe for both mother and baby. They can be easily cleaned and sterilized through boiling or steaming. The package includes a protective storage case for hygienic storage and transport.