The Spectra 2Plus is a soft pink color. Its color was selected by Lactation Specialists to soothe. Spectra Baby Founder, Heidi Humphries, insisted on the quietest motor available for the S2Plus, which when in the “massage mode” simulates the natural suckling of baby. Spectra Baby spent years developing features for the S2Plus like “backflow protection” to keep your breast milk from harmful bacteria – there’s a lot more. We thought hard about things like “adjustable suction levels” because that provides a more natural flow of milk.