Natural feeding Nipples for baby bottles Wide Neck Baby Bottle Nipple, Liquid Silicone, Anti-Colic, BPA Free, 4 Flow Sizes

1. Integrated liquid silicone, seamless and free of milk stains, can be boiled/steam disinfected, resistant to high temperatures of 120 ℃, FDA+LFGB certified, BPA free.
2. Imitation of breast milk areola and inclusion of nipple line, fitting snugly to the upper jaw, reducing nipple confusion, and making weaning easier.
3. Equipped with an anti swelling gas return valve, air is drawn in from the side without mixing with milk, reducing bloating, vomiting, and colic. It is compatible with duckbill valves.
4. 5cm universal wide caliber, perfectly matching the same series of baby bottles, storage bottles, and breast pump bottles, with the entire set of accessories interconnected.