Breast shields play a key role in pumping comfort and efficiency. That’s why Medela incorporated the new Flex™ technology that’s shaped around you with the PersonalFit Flex™ Breast Shields. Its unique oval shape can be rotated 360°, allowing you to adjust the breast shield to find the most comfortable pumping position for you. The rim of the breast shield is made with a soft, natural-feeling material that lays smoothly on the breast for comfort. Fits all Medela Breastpumps. Available in Small (21mm), Standard (24 mm), Large (27mm),
& X-Large (30mm). Authentic Medela manufacturer's parts.