Philips AVENT SCF657/25 Natural First Flow Nipple is designed to make it easy to combine breast and bottle feeding. The wide, breast-shape and unique comfort petals make the nipple softer and more flexible to promote natural latch-on. The petals also reinforce the shape of the nipple to prevent it from collapsing in baby's mouth so your baby can feed contentedly and without interruption. The nipple's shape encourages the same tongue movements suckling babies use when breastfeeding, so transition between the two is less confusing for your baby. The First Flow Nipple is designed for preemies and newborns and features a controlled, slow flow. The Natural nipple features twin anti-colic valves that work to make feeding more comfortable for babies. During feeding, the valves release air back into the bottle rather than into your baby's tummy, which reduces colic and discomfort. These nipples are made of soft, durable silicone, which is odorless and flavorless. The nipples can be sterilized in any Philips AVENT steam sterilizer, boiled for five minutes, or washed in the dishwasher. Always use this product with adult supervision. Never use feeding nipple as a pacifier. Continuous and prolonged sucking of fluids will cause tooth decay. Always check food temperature before feeding. Keep all components not in use out of the reach of children. Before first use, clean the product. Inspect before each use and pull the feeding nipple in all directions. Throw away at the first signs of damage or weakness. Do not store a feeding nipple in direct sunlight or heat, or leave in disinfectant (‘sterilizing solution’) for longer than recommended, as this may weaken the nipple. Do not place in a heated oven. Before first use place in boiling water for 5 minutes. This is to ensure hygiene. Clean before each use. Wash in warm soapy water and rinse thoroughly, then sterilize using a Philips AVENT sterilizer suitable for Natural bottles or boil for 5 minutes. Do not warm contents in a microwave oven, as this may cause uneven heating and could scald your baby. Dishwasher safe – food colorings may discolor components. Do not allow child to play with small parts or walk/run while using bottles or cups. For hygiene reasons, we recommend replacing nipples after 3 months. For optimum performance, pinch and massage the number on the nipple between index finger and thumb prior to feed. Keep in a dry, covered container. Only use Philips AVENT Natural nipples with Philips AVENT Natural feeding bottles.Recommended for Philips AVENT 2 oz and 4 oz Natural bottles. Innovative twin valve design reduces colic and discomfort. Wide, breast-shaped nipple promotes natural latch-on and makes it easier for baby to combine breastfeeding and bottle feeding. Specially design for newborns and preemies with a slower, more controlled flow rate. BPA-Free and made of soft, durable, flavorless silicone. Made of soft, durable silicone, which is odorless and flavorless. Dishwasher safe. Compatible with all Philips Avent Natural bottles: 2 oz, 4 oz and 9 oz. Innovative anti-colic valves vent air away from baby's tummy to help reduce colic and discomfort. Wide, breast-shaped nipple makes it easier to combine breast and bottle feeding. Specially designed for newborns and preemies with a slower, more controlled flow rate.Liquid Flow Speed Description: First Flow. Bottle Nipple Type: Vented. Material: Silicone. Size: 2 Count. Brand: Philips AVENT. Best Sellers Rank: #11,730 in Baby. Customer Reviews: 4.0 4.0 out of 5 stars 409 ratings 4.0 out of 5 stars. : B00PF83RAM. Item Weight: ?1.44 ounces. Bottle nipple type: ?Vented. Batteries required: ?No. Number Of Items: ?1. Material free: ?Bisphenol A Free. Material Type: ?Silicone. Is Discontinued By Manufacturer: ?No. Item model number: ?SCF657/25. Product Dimensions: ?3 x 2.1 x 3.1 inches.