Ascent 水瓶（附吸管蓋）

The double-wall insulation actually works—my water stayed ice-cold during a full afternoon hike. The straw lid seals tight enough to toss in my gym bag without a second thought.

I was worried about leaks in my bag, but this bottle’s straw lid seals perfectly when flipped closed. The double-wall insulation kept my water cold all afternoon at the park.

Filled it with ice water before a hike and it was still cold six hours later, which I honestly didn't expect. The double wall insulation really does its job. The straw lid hasn't leaked once in my bag either.