This is Eco fleece. Eco-Fleece is a spongy soft fabric which is made from recycled fizzy drink bottles.
A recycling-Plant is a machine which soda bottles go through come out as different types of materials.
Fibres are pieces of strands woven together made of natural or synthetic material spun together. It is use to make clothes and blankets.
Yarn is a natural filament spun to make a yarn of nylon, silk and other types of materials.
Matted wool is just a thick mass of tangeled wool. A grey
cardigan is made of matted wool.