Made of 999 Silver - Momcozy has always been dedicated to providing mothers with top-quality products. Our nursing cups are made of 999 pure silver to help mothers recover from nipples cracked and sore caused by breastfeeding more quickly, daily wearing it can also prevent further damage caused by frequent contact with clothing in the affected area | Innovative Perforation Design - To reduce sweating and stuffiness from prolonged wear, we've incorporated a perforated design on the surface of our nipple shield for improved breathability, also reduces weight, minimizing the burden of long-term wear. The edges of perforations are finely polished, no need worry about cutting or scraping the skin | Ergonomic Curve for Perfect Fitting - Our silver nipple cover is perfectly sized, neither pressing too tightly against the nipple nor protruding excessively, ensuring a natural appearance to the curves of the chest. We offer three different sizes for you to choose from | Safe and Hypoallergenic - Our metal nipple shields are made of 999 silver, nickel free, hypoallergenic for those moms who is sensitive skin, and also BPA-Free, no harmful residues and won’t alter the taste of breastmilk | Easy to Use - No other lotions or cream are needed, Momcozy nipple cover with perforation provide better breathability during wear, preventing sweat buildup and promoting faster recovery. Please clean thoroughly after each use and store properly | NOTE: measure your areola before purchasing a silver nipple shields, and purchase the product based on your areola size.If you are already experiencing nipple or areola pain and tenderness, it is recommended that you purchase one size larger based on your areola size.