Summit Vannflaske med sugerørlokk

I've been using this bottle for a week and the vacuum insulation really works—ice cubes were still intact after eight hours in the car. The straw lid seals tight when closed, so no leaks in my bag.

Was a bit skeptical about the straw lid being truly leak-proof, but I tossed it sideways in my gym bag and not a single drop came out. The vacuum insulation really works too—my water stayed cold through a whole afternoon in the sun.

Took this on a hot hike and the water was still icy after four hours—the double-walled insulation really does its job. The straw lid clicks shut firmly, so I tossed it in my bag without a single leak.