Subaru Impreza Rally Armor mud flaps are made from polyurethane to perform consistently under diverse conditions. The flexible UV-resistant urethane is durably abrasion-resistant and provides drivers with four-corner protection, RA mud flaps are crafted for variable temperatures to protect against salt spray, paint damaging gravel, and tar grime that wears the vehicle finish away. Whereas vinyl and rubber manifest steady, visible material curling and wear over time, strong urethane construction maintains its form through all weather conditions.