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The smoky gray tint inside gives it a much more refined look than plain clear glass, and the double wall keeps my tea hot without the outside ever getting too warm to touch. I've been using it daily for a few weeks and the borosilicate glass still looks flawless, even after going through the dishwas

The double wall really works—I can hold the glass by the base without burning my fingers even when the tea inside is scalding. The smoky grey inner layer in the grey version looks even better in person than in the photos.

The smoky grey tint on the inside gives it a moody, elegant look that photos don't really capture. It keeps my tea hot for ages without the glass ever getting too warm to hold, which is exactly why I grabbed it.