Optional set of add-ons: 5oz cup, rubber diaphragm, and duckbill valve. Made from food-grade silicone, safe and scentless. Can be easily sanitized in boiling water. A must-have for maintaining the longevity of your breast pump. Simple to assemble and exchange, making pumping a breeze. Cup set offers 24mm or 28mm breast shield (exchange every 6 months or if damaged or worn out) Replacement Cup (exchange every 6 months or if damaged or worn out) Valve (exchange every 2 weeks to 2 months) Diaphragm (exchange every 3 weeks to 6 months or if damaged or worn out) You are free to replace the entire cup set or just a single component.
