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Title: Hard to assemble
Review: If the sliding lid were slightly shorter, then you could easily thread the straw in place behind the crossguard. But as is, the sliding lid prevents the straw from pushing up into place, so you have to use your finger (or a tool like pliers if your hands are too big) to pull the mouthpiece between the sliding lid and the crossguard. This becomes tedious the very first time you wash the cups, and it really never gets easier. And what parent wants another frustration in their day, especially when the little one is begging for their drink?Also, everyone else who complained about the "spray effect" when the lid is opened is spot on. These cups are a PAIN.
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