This Elvie Breast Shield Insert is designed for nursing parents who need a smaller flange for Elvie breast pumps. This silicone breast shield insert fits into the 24 mm Elvie breast shield included with the pump and is available in 15, 17, and 19 mm sizes to improve fit and comfort. This cushion is made from 100% food-grade silicone with a soft, protective rim to reduce friction, enhance comfort, and can help express more milk. This nursing accessory is easy to assemble and clean and is compatible for use with Elvie Pump and Elvie Stride only. This discreet breast pump adapter offers a comfortable, reliable solution for everyday milk expression.