On a 33°F morning in California’s John Muir Wilderness, we made tea, got distracted for more than 10 minutes, and came back expecting a tepid drink. “Then I burned my tongue,” one editor says. A foam and ballistic-nylon sheath retains heat, and it’s easy to grip with gloves. Bonus: The handle collapses for easy packing.
The polypropylene inner cup slips out for easy washing at home.