Large

Filled mine with ice water before a long road trip and there was still ice rattling around hours later, which honestly surprised me for something this size. The bigger capacity means fewer refills, so it just lives on my desk now.

Took this on a 6-hour hike and there was still ice rattling around at the end. The bigger capacity means I'm not constantly refilling, which is exactly what I wanted.

Filled it with water and ice before a long shift and there was still ice rattling around eight hours later. The large capacity means I'm not constantly refilling it, which is exactly what I wanted.