This Elvie breast shield insert offers a smaller flange option for Elvie Pump and Elvie Stride, fitting into the standard 24 mm shield and available in 15, 17 and 19 mm sizes. Made from 100% food-grade silicone with a soft protective rim, this silicone flange adapter provides a gentle seal that improves comfort during expressing. A better fit can help express more milk and reduce friction, while remaining easy to assemble and simple to clean between uses. A practical breast pump accessory for parents, these inserts snap neatly into the included shield for fast size swaps and a more comfortable pumping routine.