"Style with substance. Made from soft silicone that’s squeezable and feels comforting with its warm and breast-like feel. Soft, silicone nipple, that flexes and stretches like a breast Anti-colic valve, to keep gas away from baby’s tummy Speedy self-sterilizing, in just 3 minutes* 100% leakproof with the lid (even when upside down) It’s also BPA free *Based on placing one bottle in microwaves from 700-1000w" Breast-like: Made from soft-touch silicone with a skin like feel for added reassurance and seamless switching from breast to bottle Natural latch: Our bottle nipples are shaped to encourage a natural latch, reducing air intake and preventing nipple confusion when switching between breast, bottle and back again Anti-colic: Tommee Tippee Natural Start nipples feature an innovative anti-colic valve which reduces air ingestion, helping to reduce the symptoms of colic Self-sterilizing: Tommee Tippee Natural Start bottles can be easily self-sterilized in the microwave in just three minutes Pace feeding: The soft silicone nipple flexes and stretches like a breast and allows your baby to feed comfortably at their own pace Tommee Tippee SKU:42272811