It is light weight, easily shaped and an excellent insulator.

Porcelain is an excellent insulator for use at high voltage, especially in outdoor applications.

It has a poor blood supply, which makes it an excellent insulator.

Air is an excellent insulator since it does not conduct or disperse heat well.

It is an excellent thermal insulator and among the least dense solids known.

Fat is an excellent insulator against the cold.

It's an excellent under-body insulator and has a long effective life.

Ice is an excellent insulator, and therefore limits the heat transfer to the freezing surface.

Feathers are excellent insulators, and tucking a foot into the body prevents heat loss.

Green roofs are excellent insulators during the warm weather months and the plants cool the surrounding environment.