Although lovely and modern they are fragile. I broke one already when it tipped off a coaster.  I used to have an insulted glass that was sleek and modern but was too large for me to get my hand around.  That older glass was more insulated than this one and would not require a coaster when set on a table.  This one if I have iced drinks which is what I use it for does require a coaster. The handle is spacious enough to get your fingers through. Design though lovely is top heavy with small bottom.