Summit Vannflaske med sugerørlokk

I was skeptical about vacuum insulation claims, but after leaving this bottle in my car for four hours on a hot day, the water was still noticeably cold. The straw lid's seal gives me confidence tossing it in my bag, and the close function is simple to use.

The straw lid really is leak-proof—I tossed it in my bag with a laptop and nothing spilled. Drinks stay icy cold for hours, even in a hot car.

I’ve been using this bottle daily for two weeks and the vacuum insulation really keeps my water ice-cold for hours, even in a hot car. The straw lid is completely leak-proof when closed, which is perfect for tossing in my bag. It’s exactly what I needed for staying hydrated on the go.