Designed for Breastfeeding Support: The nipple shields are designed to help with common breastfeeding challenges such as flat or inverted nipples, latching difficulties, soreness, and overactive letdown. Safe for Both Babies and Moms: It is made of 100 percent food-grade silicone, BPA-free and BPS-free. It is easy to clean and steri-lizer, and convenient for daily use. Maximum Skin Contact: Our nipple shield features a unique cut-out design that facilitates maximum skin contact between mom and baby during breastfeeding. The hole diameter is 2mm. Milk flows smoothly, Feed baby easily. Multifunctional Storage Case: We provide a pink case for convenient storage. Great for travel and on the go. In particular, the case is bigger than others to pack in small stuff for baby, such as pacifiers, pacifier clips, and toddler spoons.