แก้วเบียร์ชิโมะ

I was worried the narrow mouth would make cleaning a hassle, but it actually keeps my coffee hot for hours without any spills. The rubber bottom is a nice touch too—it doesn’t slide around on my desk at all.

The double handle makes it so easy to lift even when it's full, which I didn't expect. Coffee stays hot for hours thanks to the vacuum insulation, and the narrow opening keeps splashes down. This is my go-to mug now.

I was skeptical about the trapezoid shape, but it actually fits in my car cup holder perfectly. The narrow mouth opening really keeps the heat in, and my coffee stays hot for hours.