The Medela Contact Nipple Shield is a breastfeeding aid designed to help mothers with latching difficulties. This small-sized shield comes with a convenient storage box and includes 2 pieces made from soft, ultra-thin silicone material. The product comes with a yellow protective storage case for hygienic storage and transport. The nipple shields are made from BPA-free medical grade silicone that is safe for both mother and baby. The small size (S) is suitable for mothers with smaller nipples. The shields should be cleaned and sterilized before first use and after each use.