This Elvie replacement breast shield features clear position markings to help align the nipple for efficient, comfortable suction. Available in three sizes (21 mm, 24 mm, 28 mm), this pump flange provides a tailored fit to improve milk expression and reduce discomfort. Made from 100% BPA-free Eastman Tritan EX401 plastic, this nursing accessory is durable, dishwasher-safe and built for regular cleaning. Pack includes two breast shields and is designed for use with Elvie Pump only, making this an essential replacement part for breast pump maintenance.