The Spectra® 16mm Single Wide Breast Flange provides efficient breast pumping sessions with maximum comfort. To obtain the proper suction during pumping, the Spectra® 16mm Wide Breast Flange funnel centers over your nipple to create a seal around the areola. The flange creates a vacuum to gently draw the nipple inside the funnel to extract milk. Manufactured without BPA, the Spectra® 16mm Wide Breast Flange is easy to clean and safe for moms and babies. Compatible with all Spectra® electric breast pumps Lightly used. Cleaned and sanitized.