Summit Vannflaske med sugerørlokk

Took this to the beach and the water stayed cold the whole afternoon—the double-wall vacuum does the job. The straw lid is easy to sip from, and I like that I can snap the nozzle closed without worrying about leaks in my bag.

I've been leaving it in my car during summer heat and the water is still ice-cold at the end of my shift. The straw lid snaps shut with a satisfying click and I haven't had a single leak in my bag yet.

The double-walled insulation really does keep water ice-cold for hours, even in a hot office. My only tiny gripe is that the straw requires a firm pull to get the water flowing, but it's a solid bottle overall.