The Ardo Pumpset incorporates "Vacuum Seal" technology, which creates a 100 % secure barrier protecting the breast milk from pathogenic agents and other contaminants. Important features at a glance Protects from contamination, even by pathogenic agents, thanks to "Vacuum Seal" Technology Membrane fully integreated into all Pumpsets Made from premium-quality BPA-free polypropylene Double Pumpset is available