This cup is easy to hold and carry in car, but don't count on it to keep your coffee hot or even warm. I tried everything, filling it with boiling water prior to putting my coffee in it, still cools the coffee within 20 minutes. I have an insulated mug from DD that keeps my coffee hot for,3-4 hours....HOT!  Because,once my coffee gets cold I cannot drink it. (And I drink my coffee black, so it is not milk or cream cooling the coffee). So, on my shelf it sits. Waste of money, and I hate to waste money.