Well, you could put something hot in a thermos, and something cold in a cooler bag, wich is basically lined with thermal material. Things kept in thermal things won't stay the same temperature forever.
Things which keep warm things warm and cold things cold are referred to as insulators.
To insulate : To keep warm things warm and cold things cold
yes, wood is an insulator so it keeps things warm.
The wool prevents 'the thing' from losing heat, i.e. it won't make a cold stone warm.
Cats have fur to keep them warm when they are cold.
They get cold as they lose the ability to keep warm, and die.
They Keep out cold and keep in hot or keep in cold and keep out hot it depends on the weather
They have a thick layer of fat so they can keep warm.
yes and hot too. Insulation is a heat barrier -- it tries to prevent heat exchange between the two sides. Vacuum is the best. Then air. Metals are the worst. ====================
Whiskey keeps you warm XD
to keep warm since it is cold up in the Artic region. to keep warm they swim since they are use to the cold.
Styrofoam is used to keep drinks cold or warm.