Nuk Kit Shells for Breast helps mothers with common problems during breastfeeding. The collecting shells are rigid (plastic) and have an anatomical shape for hygienic collection of breast milk leaks during breastfeeding. With a practical anti-splash mechanism for expressing the collected breast milk. With small inserts in the rigid shell for greater stability. The ventilated protective shells protect the irritated and sore nipples. In plastic, they have an anatomical shape for use in the bra, and allow to catch leaks of milk. With small inserts in the rigid shell, for greater stability. With ventilation holes that allow air to circulate, so that sore nipples heal faster. Silicone pads provide protection for the chest.