This filter uses multi-layered high-quality cotton gauze treated with specially designed sticky additives as the filtering material, which can effectively block and capture harmful pollutants, while increasing air flow and enhancing the engine's horsepower and acceleration performance. The filter is washable and reusable. Under normal highway driving conditions, it only needs to be cleaned once every 75,000 miles (about 120,000 kilometers) or every 5 years, reducing the waste generated by disposable filters. It has a sturdy structure, made of high-quality durable materials and advanced manufacturing processes.