Summit 水瓶附吸管蓋

The double-walled insulation really works—I took it hiking in 90-degree heat and my water was still cold three hours later. The straw lid seals tight with a simple click, so I can toss it sideways in my bag without a second thought.

I was worried about leaks in my bag, but the straw lid seals completely when closed, so no spills at all. The double-wall really works—I left it in a hot car and the water still stayed cold for hours.

The insulation keeps my water ice-cold for hours, even on hot days. The straw lid is convenient, though I wish it was easier to take apart for cleaning.