Made of 999 Silver - Momcozy has always been committed to providing moms with the highest quality products. Made from 999 Sterling Silver, our nursing cups are ideal for cracked and sore nipples caused by breastfeeding, and can be worn daily to prevent further damage caused by frequent contact between the affected area and clothing. | Non-perforated Design - prevents milk leakage, nursing pads can be placed over the silver nursing cups when in use, it helps to keep the cups invisible and prevents milk leakage, the perforated edges are finely polished, so you don't need to worry about cutting or scratching your skin | Ergonomic Curve for Perfect Fitting - our silver nipple shields are sized to fit snugly, without being tight on the nipple or overly protruding, ensuring a natural-looking curve to your breasts. We offer three different sizes to choose from. | Safe and Hypoallergenic - Our metal nipple shields are made of 999 silver, nickel-free, hypoallergenic for moms with sensitive skin, and also BPA-Free, so they won't alter the flavor of breast milk. | Easy to Use - No need for other lotions or creams, Momcozy non-porous nipple shields prevent milk leakage. 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.