Soothing sore, cracked nipples or blisters with hand crafted silver cups Recommended to use two weeks before breastfeeding and after birth as a preventive measure to avoid irritation cuts, soreness, or cracks that are caused by breastfeeding. 925 sterling silver. No chemicals to mums or baby. Nickel free. No additional creams or lotions needed Easy to clean the cups by gently rubbing with a water.