This Spectra Silicone Massager is made of soft silicone with cushions that provide a tighter fit for comfort. They can be inserted into the breast shields just before expressing to help cushion and massage the breasts. Compatible with the 24mm and 28mm Flanges ONLY.
Important Note: It will convert the 24mm and 28mm flange into 20mm flange. Compatible with all Spectra breast pumps: Spectra S1, Spectra S2, Spectra 9 Plus, Spectra M1. If double pumping, order two for $18.99