二重壁マグ

The outside stays perfectly cool to the touch even with boiling water inside, which is such a relief for clumsy mornings. I’ve been using it all week for coffee and the clear walls make it easy to see how much is left without lifting the lid.

I keep one on my desk for tea and one in the kitchen for iced coffee—the glass is thick enough that the cold never sweats onto the counter. The clear walls show off the drink’s color nicely, and my hands never feel the burn when I grab it mid-sip.

The exterior stays perfectly cool to the touch even with boiling coffee inside, which makes it my go-to for desk mornings. Watching the liquid float between the glass layers is oddly mesmerizing too.