Owned and operated by fellow mamas, lactation consultants, and registered nurses — Spectra is committed to supporting every mama on the beautiful journey of breastfeeding. From their unique Natural Nursing Technology to our one-of-a-kind customer care, you can count on Spectra to be right there with you, every step of the way. They are mamas. They are nurses.

The Spectra Spectra Backflow Preventor is a lid-type backflow preventer compatible with the following Spectra models: M1, 9+, 9s, S1, S2, Dual S, and Dual Compact. It contains one top cover, one bottom cover, and one membrane.