Summit Vandflaske med sugerørslåg

The straw lid really is leak-proof—my son tossed it in his backpack and not a single drop came out. Keeps water cold all day at school, which is exactly what we needed.

I was skeptical about the straw lid staying leak-proof in a backpack, but after three weeks of tossing it around, not a single drop has escaped. The vacuum insulation keeps water ice-cold through an entire afternoon at the park, which is exactly what we needed.

My kid takes this to school every day and the vacuum insulation actually works — ice cubes are still there after lunch. The straw lid clicks shut tight so there's never juice all over the backpack, which is a total win for me.