Medela Calma Breastmilk Feeding Nipple<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> Vented nipple helps avoid gassiness </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Flow control valve allows baby to control milk flow </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Mimics natural feeding behavior: baby can feed， pause and breathe， similar to breastfeeding </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> One size or shape nipple for all stages of breast milk feeding </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Made without BPA </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Flow control valve allows baby to control milk flow </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Milk only flows when baby creates a vacuum </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Mimics natural feeding behavior: baby can feed， pause and breathe， similar to breastfeeding </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/312S4jYScRL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41OW8cIGyUL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41zdKaDTA8L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31gFjqhnx4L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/11LLnpPcszS.png" noproxy>