I bought a cozy sweater made of wool.

I love knitting with Shetland wool.

Mineral wool is commonly used as insulation material in buildings.

Rock wool is a type of insulation material made from mineral fibers.

I used steel wool to polish the metal surface.

She is a dyed-in-the-wool environmentalist.

I used wire wool to remove rust from the metal.

Glass wool is commonly used as insulation material in buildings.

I need to buy some cotton wool for cleaning.

I bought a woolen sweater for the winter.