Spectra Baby USA BPA/DEHP-Free Backflow Protector Replacement Part Compatible with S2, S1, 9 Plus, or M1 Breast Pumps
 
DETAILS
Note that some of these accessories can also be purchased as part of the Spectra Premium back flow protector.
Will affect the pump suction if torn.
Wash with care. Please do not wash it with straw brush.
Please wash with liquid cleanser and rinse thoroughly.