This new version prevents milk from flowing to the pump by 99.99%
The new membrane encase the cover while the cover caps together to secure
Part connecting to spectra breast shield is fragile. When slotting into spectra breast shield, too tight will result in difficulties pulling out. Please secure into spectra breast shield, not all the way in.
Can replace the membrane inside
Price stated is ONLY for 1 piece, please add two time if you need a pair