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Title: DON'T BUY THESE
Review: Do not buy these bottles, or even put them on your registry. My son, who is now three months, still can't use these. Every time we try, the nipple collapses, so you have to unscrew the top or bottom four or five times in one 4-ounce feeding. I'm trying to get my money back from the company right now. If you're concerned about gas and too much spit-up and burping, use Dr. Brown's. They're super!
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