They can also be made of silk, gold, silver, or other things.

The cocoon is made of brown silk and can be found on the ground.

I was wearing a long, heavy dress, made of white silk.

The cocoon is made of brown silk within the mine.

The cocoons are made of brown silk on the ground.

The medal also came with a ribbon made of silk.

He passed it around the group, and they found that it was made of silk.

Both can be made of silk, although nowadays it is usually polyester.

The sweat suit looked like it was made of silk.

For things made of wool and silk there are special regulations.