The Tumbler's "skinny" profile fits in most cup holders and keeps hot drinks hot for up to an hour and cold drinks cold for 4-6 hours. It's extra thick walls give it the weight of glass and ensures that it stays stable on table tops even with the tall profile. It's made in the USA from the same material as bulletproof glass so you can bet it will stand up for the long haul. It is Dishwasher safe and is also FDA and California Prop 65 tested and certified. Dimensions of the cup are 3.5" wide x 12" high and it weighs a little over one pound.