Two valve heads, six valve membranes.
You May Also Like
The Medela Silicone Breast Milk Collector is a true breastfeeding companion, which protects each precious drop of milk from being lost.
Best Breast Pump 2020Freestyle Flex™ Double Electric Breast Pump
Newest additional to medela breast pumps - highly recommended! Express wherever and whenever you like, with no compromise on pumping performance.