Medela Extra Membranes， 2 Packs of 6 Membranes<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> These extra membranes are compatible with all Medela Breastpumps. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> BPA-free. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> 6 membranes per pack. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Total 12 membranes in this purchase. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31YJ8UG5CWL.jpg" noproxy>