Compatible Models: For Avent, Spectra S1/S2 wide-mouth flanges pump directly into breastmilk storage bags (like Lansinoh, NUK milk bags).
Pump into Bags: Ideal for pumping directly into breast milk storage bag. No milk loss due to transferring from collection bottles to breastmilk bags. Never lose any drop of "Liquid Gold".
Dimensions: 1.8 x 1.8 x 3 inches
Package Includes: 4× Breastmilk Storage Bag Adapters