Specially designed for use with Playtex Nurser bottles. Convenient disposable liner collapses to keep air out of the milk. BPA free. What makes the Playtex nurser with drop-ins liners different? Drop-Ins Liner: As baby feeds you can see the soft liner gently collapsing to prevent air from mixing with the milk and getting into baby's tummy. This means less gas and less discomfort for baby. See how it works at www.Playtexbaby.com. Made in USA.

For Use with Playtex Nurser: 1. Open package at bottom, remove liner. 2. Place liner into nurser and fill. 3. Pull nipple through retainer ring and screw onto nurser until you feel the twist n click lock into place. 4. Click bottle into angled position and feed baby. 5. Discard after single use. Note: Do not allow sharp objects such as fingernails or rings to come into contact with the liner. Warming: A. Warm liquid in the assembled nurser by placing nurser under hot tap or in a pan of warm water removed from heat source. Or: B. Before pouring into assembled nurser, warm liquid in separate container and cool to lukewarm (at least 15 minutes if boiled).