Kerbl - Flutter Valve Nipples - 5 Pack - for Lambs / Kids (Pritchard) acessories The plastic used is known

The plastic used is known for its strength in hot or cold weather

Material type: 1/4" Carbon Steel

that will not stretch out over time like other brands

Lamb contains high levels of zinc and iron and are more easily absorbed than from other sources

Premium cast iron

Kerbl - Flutter Valve Nipples - 5 Pack - for Lambs / Kids (Pritchard) acessories The plastic used is knownThese unique nipple have a hollow cone shape that provides a choice of feeding rates. The valve allows air to be freely admitted, but prevents milk from being squirted out the air vent. Nipple cannot be pulled from the bottle. Helps limit waste. Attaches to any screw top water bottle.