A range of flow rates are available for your growing baby. First flow nipples (Size SS) designed for newborn. Slow flow nipples (Size S) designed for newborns up to 3 months. Medium flow nipples (Size M) designed for 3 months to 6 months. Fast flow nipples (Size L) designed for 6 months to 12 months. Variable flow nipples (Size +) designed for 12 months+, and good for thicker fluids.

[ FOOD GRADE & SAFE Material ] - Matyz products are CUSTOM MADE with the safest and purest raw material available. The nipple is made of 100% food-grade silicone, complying with CPC safety rules and US Food Grade requirements. BPA free, phthalates free and lead free. Safe in microwave, boiling water, top rack dishwashers and sterilizers. [ Anti-Colic with Venting Valve ] - The venting valve integrated into the nipple vents air into the bottle and away from baby's tummy. Allows the little one to ingest more milk and less air, and helps to reduce unwanted colic, spit up, burping and gas. [ Natural Feel Nipple is Just Like Mom ] - The soft silicone nipple feels like skin, and gently elongates and flexes during feeding to mimic natural breastfeeding action. The naturally shaped nipple with a wide mound and matte surface allows baby to latch on easily without getting tired or slipping to the nipple tip, and further supports the transition between bottle and breast. Baking strengthens the silicone to help prevent nipple collapse while providing constant softness.

Age Range (Description): Newborn. Liquid Flow Speed Description: Slow Flow. Bottle Nipple Type: Variable Flow. Material: Silicone. Brand: Matyz. Best Sellers Rank: #19,654 in Baby. Customer Reviews: 4.3 4.3 out of 5 stars 138 ratings 4.3 out of 5 stars. : B08211P6Q3. Item Weight: ?2.08 ounces. Bottle nipple type: ?Variable Flow. Batteries required: ?No. Style: ?4-PACK, Slow Flow, 0 - 3 Month. Number Of Items: ?4. Material Type: ?Silicone. Is Discontinued By Manufacturer: ?No. Item model number: ?11012. Product Dimensions: ?2 x 2 x 1.7 inches.