As a specific material, Polyester Fibers most commonly refers to a type called polyethylene terephthalate (PET).
By mixing different types & sizes of fiber this material can get many different properties. Everything from soft fluffy upholstery to hard acoustic plates that feels like a wooden board. It all depends on the weight per m² and fiber types.
Consists largely of recycled PET bottles
Can be reused to 100%
Can meet criteria for eco-labeling
Does not give any mold growth
Provides low carbon footprint
Do not give rise to allergies
Do not emit hazardous substances during combustion
Sound absorbers, air purification, thermal insulation, upholstery in furniture and beds, moulding of products.