Baseus A1 - a reliable filter! Main characteristics: - Material: HEPA; - Effectively traps dirt; - High level of filtration; - Reusable. The Baseus A1 filtration has high efficiency in filtering particles as small as 0.3 microns. This allows it to capture bacteria, viruses, dust, dust mites, tobacco smoke, allergens, and other pollutants. The structure of the Baseus A1 is made of special fibers that form microscopic dense layers. These layers interact to trap the smallest particles, ensuring a high degree of filtration. The efficiency of the Baseus A1 has a large surface area, which enhances its effectiveness. A larger filtration area allows it to hold more particles and pollutants.