二重壁ガラスティーカップ

The double wall design actually works—my tea stays hot while the outside stays cool enough to hold without a coaster. It’s the right size for a proper brew, and the glass is just heavy enough to feel sturdy without being bulky.

I was skeptical about the 350 ml size being enough, but it's actually perfect for a generous single brew. The glass stays cool to the touch on the outside even with boiling water inside, so I can hold it comfortably while the tea steeps. Only downside is remembering it's hand wash only, but that's a

The double wall really does its job—my tea stays piping hot while the outside stays perfectly cool to hold. At 350 ml, it's just right for one generous brew, and honestly it makes my morning pour-over feel way more elegant.