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Title: not easy to use
Review: I bought these to store milk before I went back to work. They work fine when I'm home with all the time in the world. I've back to work for 4 days and find these bags very time consuming...opening the bag, threading the twist tie, attaching it to the shield, pumping, deattaching it, and closing it. Pumping can take up to 25 minutes. Not something that can happen 2-3 times a day. And I'm never sure how much I've pumped. When the bag is attached to the shield it says 1 thing, but then you seal it up and it says anothers. Today, I'm going to buy bottle set. They close just as tight and are much easier to use.
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