3 m+. BPA free. With NaturaLatch silicone nipple, 5 pre-sterilized drop-ins liners. Closer to natural breast feeding. Promotes: more natural breathing. Easy switching between breast & bottle. Air-free feeding to help reduce colic. Soft Like Gently Collapses Like Mom's Breast: for more natural breathing & feeding rhythm clinically proven! Naturalatch Nipple -most Like Mom Raised Texture: Helps baby latch naturally - clinically proven! Promotes proper latch-on for easy switching between breast & bottle -clinically proven! Pre-formed, pre-sterilized disposable liners means less time washing. Easy, one-handed assembly. A fresh, clean bottle anytime, anywhere. Promotes air-free feeding to help reduce colic. Our unique soft liner gently collapses as baby feeds, preventing air bubbles from mixing with milk that can cause gas, colic & fussiness. Comfortable Feeding: Angled design promotes semi-upright feeding which is recommended by pediatricians to help prevent ear infections. Versatility: Mix and Match: All Playtex nipple rings & caps can be used with Playtex VentAire wide reusable bottles. If not completely satisfied, then return for full refund of purchase price or replacement. Read and keep enclosed insert with warnings, cleaning instruction and tips. www.playtextbaby.com. www.playtexbaby.ca. See how it works at www.playtextbaby.com. Join our community www.facebook.com/PlaytexBaby. Liner made in the USA. Holders and nipples made in China.