We know how important uninterrupted pumping is for you and your baby. That's why we've put together this essential spare parts kit – so you're always ready when you need to be. Typically, consumable parts last 1-3 months, but we recommend replacing them sooner if you notice decreased suction or performance. Having these spare parts on hand means one less thing to worry about during your breastfeeding journey. What's Included: • eufy Wearable Breast Pump S1 Pro • Original Diaphragm (2-Pack) • Original Duckbill Valves (4-Pack) • Original Milk Container (2-Pack) • Original 27mm Flange (2-Pack) Keep pumping with confidence-we've got you covered.