Set includes one pair each of silicone X-Small, silicone Small, and hard plastic Medium shields, plus a pair of adapters for Ameda pumps. These do fit the Ameda Mya Joy insurance pump!
No other parts needed, use your Spectra bottles, backflow protector, and valves.
The Small Set covers a nipple size range from 15mm to 25mm.
The Small and X-Small Silicone PumpinPals, with Elast+Assist Technology™ (EAT), help improve milk flow for moms with elastic breast tissue.