
I'm kind of floored to admit that the new Active Top Smart Drinking System from SIGG absolutely refused to leak no matter how much I abused it. This new line of bottles for adults and kids has a liner that's eco-friendly, BPA-free and phthalate-free, plus it's recyclable and practically unbreakable. It's designed so that kids can drink out of this bottle without tilting it--not to mention carry it upside down in a backpack full of report cards or fall asleep with it in their lap during a long car trip and wake up with dry pants.

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I'll have to keep these in mind for when Baguette is a little older. Right now we're having good luck with Camelbak bottles for kids, although we do have to keep replacing the bite valves due to chewing--but they seem to be at the right intersection of spill-proof-ish and cleaning complexity for us.
It supports clean water projects. It prevent kids from any forms of viruses.