Assam

I love my double walled glasses for my morning tea. They're very light and delicate so you have to be careful but you don't need to worry about burning your hand because the heat doesn't penetrate the second wall. And of course they look great.

From Bodum:
Our Assam double wall glass collection ...moreis a design innovation. These (0.2 l, 7.0 oz.) glasses are made of ultra-light, heat resistant, mouth-blown borosilicate glass. Their unique double wall design creates a highly effective layer of insulation that keeps hot drinks hot without burning your fingers and cold drinks cold without the messy condensation. The glasses are available in a variety of sizes to perfectly frame espressos, cappuccinos, beer and iced drinks, forever eliminating the need for a coaster. Proving that design works when form follows function, these thermo glasses have already been awarded with two prestigious international design awards: The International iF Product Design Award 2005 “for their pure and minimal design” and The Materialica Design Award 2004 “for using a known material in an innovative way.” Also available in 3 oz. and 9 oz. 13.5 oz sizes.