Theeblad-tumbler

Fits perfectly in my car’s cupholder without wobbling, and the stainless steel body keeps my tea hot through my whole commute. The lid seals tight enough that I can toss it in my bag without a drop leaking.

The vacuum insulation actually keeps my tea hot for hours, and it fits snugly in my car's cup holder without tipping over. I've been bringing it to work every day since it arrived, and the stainless steel interior doesn't hold onto yesterday's flavor.

I was skeptical about the cupholder fit, but it locks in perfectly on my morning commute. The 16-oz size is just right, and the stainless steel keeps my green tea hot for over two hours without any metallic aftertaste.