I've been looking for the perfect double-wall glass mug for a long and found there were many similar ones from different companies. I did have many choices for these kinds of a mug, but I couldn't found the one with perfect shape & design besides Zwilling Sorrento Plus Double Wall Glass Latte Mug. The other ones have similar looks, but they have some weird handles or shapes.

Zwillings' has a perfect look of a handle and a very delicate design for the double-wall glass mug. 

Moreover, Its function of insulation is remarkable as well. It does keep my coffee warm relatively for a long so I can enjoy the warm cup of coffee in the morning even though the severe cold weather in NYC. 

and I like the clear light cling sound of tapping the glass with my fingernails! LOVE IT! [This review was collected as part of a promotion.]