The cups are compatible with the S1/S2, Spectra S9+ and the Spectra M pumps and have full compatibility with Spectra breast pump products. Within your Spectra Handsfree kit you will receive everything you need to start using these cups with your pumps straight away: milk collection cups, breast shields, silicone valves, backflow prevention caps and membranes, tubing, hose tips and bottle connectors.
