زجاجة روم

I filled it with ice water before a hike and there was still ice rattling around eight hours later. The lid pours from four directions, which sounds gimmicky until you're trying to fill a cup without twisting the whole bottle around.

Took this on a full day of errands and the ice from that morning was still rattling around at dinner. The pour lid is the sleeper feature, four directions means I'm not tilting the whole thing awkwardly into my cup.

Filled it with ice water before a 6am hike and there was still ice clinking around at lunch. The leakproof lid survived being tossed in my pack all day without a single drip.