The Tommee Tippee Closer to Nature Nipple Shields is intuitively designed for more comfortable and discreet breast care. Easy latch on, made from a thin soft silicone that acts like a second skin for sore and cracked nipples, allowing baby to latch on easily. The high grade silicone gently flexes and stretches with the movement of the nipple. Made to fit all nipple sizes. Unique c air design with slits in the shield allow air to circulate and increases the skin to skin contact with the baby while breastfeeding, giving baby more of the natural feel and smell of mum"s breast.