2x 17 mm One-Piece Breastshieldm Extra Small w/ Valve， Membrane for Medela Breast Pumps (Pump in Style， Lactina， Symphony); Made by Maymom<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> 2x One-Piece Breastshield ( 17 mm internal diameter) ， 2 Valves， 4 Membranes; Compatible with all Medela pumps except FreeStyle and Harmony. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> This product is NOT for everyone. It is suitable for mothers with nipple diameter 14-16 mm (AFTER a pumping session) and nipple length shorter than 17 mm during a pumping cycle. DO NOT use this product if your nipple dimensions are outside these ranges to prevent discomfort.. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> US FDA registered medical device (No. D192499); Complies with US FDA and EU standards for containers that contact food and class II medical device; Test reports are online for your reference; Retail poly-bag packed; sealed by the manufacturer. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Made of Bisphenol-A (BPA)/DEHP-free material and all components are steam safe for sterilization. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Available in various sizes (15， 17， 19， 21， 24， 25， 27， 30， 34， 36 mm) for purchase. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41%2BoZns%2B51L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51PcsDP4JIL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41q-l3qYJiL.jpg" noproxy>