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 breastfeeding more quickly, daily wearing it can also prevent further damage caused by frequent contact with clothing in the affected area.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.