Argali Icon Nalgene ウォーターボトル

I was worried about leaks tossing this in my daypack, but the wide mouth seals perfectly even when it's on its side. The 32-ounce size holds enough water for my whole afternoon trail run, and the BPA-free plastic doesn't give off that weird chemical taste.

Filled it with hot tea for a hike and it stayed warm for hours—the wide mouth also made cleaning a breeze. No leaks at all in my pack, which is a huge relief.

Took this on a muddy hike and it survived being dropped on rocks without a scratch. The wide mouth makes adding ice cubes a breeze, and the leak-proof lid hasn't dripped once in my backpack.