Homework: Requirements on selected object

The main object I rely on every morning is my coffee maker and a coffee mug. So my selected object will be the one I carry around for the first half a day, just about every day - coffee mug!

Here is the list of 'must' have requirements:

1. Must be large enough to hold medium drink.
   
2. Must easily fit in one's hand (by either have a good grip or a handle).
3. Must fit into the car's cup holder!
4. Must have good isolation for preventing burns to the carrier, as well as for preserving drink's temperature for a longer time periods(either cold or hold).
5. Must have secure lid that functions as a isolator and spill proof cover.

And here is the list of 'desired' characteristics:

1. Would be preferred to have nice stylish design to attract a potential buyer.
2. Would be preferred to be make of some durable materials that will last and don't break from the first fall to the ground.
3. Would be preferred to be microwavable.