Dr. Browns Nipple Shields with Sterilizing Case is a nipple shield to place over your nipple tohelp breastfeeding moms with many kinds of latch-on issues.Flat or inverted nipples, overactive letdown, sore nipples the Nipple Shields can help! The ultra-thin, soft 100% silicone shield feels more natural, featuring a cut-out to maximize skin-to-skin contact with baby. Nipple shield for flat or inverted nipples, overactive letdown, sore nipples to help latch-on Ultra-thin, soft 100% silicone shield for more natural feel Cut-out to maximize skin to skin contact with baby Additional holes ensure shield is more anatomically correct to help prevent pooling milk Includes an all-in-one carrying and Sterilizing Case protects the shields, microwave sterilizes, and acts as a drying rack. Sterilizing case is clinically shown to eliminate 99.9% of bacteria, mold, and the yeast that causes thrush Side-by-side design offers more even drying, avoiding stacking the shields and collecting water Comes with two (2) Nipple Shields and one (1) Sterilizing Case BPA free Available in 2 sizes 1 & 2 Includes 2x nipple shield Recommended for 0+ months. Size Chart Size Nipple Size Size 1 Up to 24 mm Size 2 25 mm and up *Nipple shields are temporary tools to use under the supervision of healthcare providers.