Contains 2 Backflow Protectors, including 2 Large Caps, 2 Small Caps, and 2 Silicone Diaphragms. Compatible with Spectra Backflow Protectors, both new and old versions.

• Designed to work with the flanges of Spectra S1, Spectra S2, and 9 Plus Synergy Gold Breastpumps. Complete compatibility. No milk will enter the tubing, so the tubing will remain clean.

• Secure Fit with OEM tube and Maymom tube for Spectra. No fallen tubes during pumping session.

• US FDA Registered Medical Device (No. D192499), Health Canada License (No.26003), Australian Health and Aged Care (ID 463470). Inspected by US FDA. Comply with FDA/EU regulations for plastic materials that contact food. Test reports are conducted by independent lab and available online for reference.

• Made from BPA-free material. Can be cleaned with water steam, boiling water or microwave-steam bags. Retail packed, sealed by the manufacturer - Maymom, not Original Spectra parts.