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The double-walled insulation really works—my daughter’s water stayed ice-cold after six hours at the park. The straw lid is a breeze for her to open by herself, and there’s been zero leakage in her backpack.

My son’s been using this at school and the vacuum insulation really keeps his water ice-cold until lunch. The straw lid is completely leak-proof in his backpack, which is a huge relief. So glad we switched to this one.

I was a bit skeptical about the straw lid at first, but after a week of my kid tossing it in the backpack it hasn't leaked once. The insulation keeps the water cold through lunch, which is a win for a picky drinker. Only wish it came in a slightly bigger size for longer school days.