Features: -Made of high-quality silicone material, wear-resistant, tear-resistant, durable and easy to clean. -The air inlet and outlet work independently, and are equipped with a condensation outlet to ensure efficiency and facilitate the dissipation of moisture and heat. -The headband is highly elastic and can be adjusted to fit different head shapes. -Equipped with plastic cover, 5N11 filter cotton and 6001CN filter, it can filter out organic vapor, carbon dioxide, acetone, dust, ether, C6H6, benzene, gasoline, etc. -Suitable for assembly, spraying, felling, chiseling, grinding, processing, painting, casting, sawing, welding, etc. .