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We all know how precious breast milk is (liquid gold) so avoiding leakage is the key point for storage bag. I was so surprised that these BumbleBee storage bags are flexible and keep the leakage proof at the same time. And the sawteeth on the top of the bag makes it easy to be tear. These bag is big enough for the baby (250 ml) but I suggest you don’t fill the bag so full. Squeeze the air out of the milk storage bag slowly and carefully and seal it at the final. Remember write down the date, name and time in the reverse side to ensure the baby would not drink the expired milk.
While they are definitely thick and easy to use, I’m only giving three stars because when pouring the milk out, you can’t get every drop you put in it, back. My fiancé and I have to cut a hole in the opposite side to get air flow to help it all come out.