These Spectra 'Pre-Sterilsed Disposable Milk Storage Bags' ( 30pcs ) are very simple to connect to the breast pump. They are coated and treated specially to block out air and moisture, keeping the expressed milk fresh.
The bags can be sealed shut to prevent any contamination or leakage. The scale on the front of the bags lets you to see how much milk has been expressed. The pre-sterilized bags are double-walled and are freezer safe.
Please note that the date printed on these bags is the date of manufacture. These bags do not expire.