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Review title: Impossible to open
Product review: This cup is impossible for myself and my husband to open! We were only able to use this cup once since it never opened again. I have a friend who is having the same problems with this cup.Also it is not what we were looking for it is to spill proof I was looking for a cup to transition from the playtex straw cups to a regular cup. I wish we had removed the valve before giving it to my daughter.
