Synthetic wool (Polypropylene) is a man-made fibre, made up of tightly twisted yarns that give the rug a lively lustre. Polypropylene has a high resistance to wear and can withstand heat well. Rugs produced using polypropylene are ideal for people with allergies to, for example, natural materials. The material is antistatic which means it does not shed fibres or attract dust and is easy to clean.