[Ergonomic design] mask is made of high-quality silicone material, which is soft and durable, and will not feel uncomfortable if you wear it for a long time. Adjustable and elastic four point headband, suitable for headforms. light masks are suitable for nuclear and . They are comfortable to wear and convenient to carry. [ field of vision and effective communication] Impact resistant polycarbonate welding with field of vision and built-in anti fog layer. Good vision makes work more convenient. Built in speech diaphragm, clear voice transmission, more convenient and efficient communication. [Fully sealed & filtered] The edge of the mask is made of double-layer silica gel, which can closely fit the face and protect the body. Full cover with 40mm activated carbon filter and dual activated carbon filter. The mask filter can effectively filter , and common particles. [Widely used] The air inlet of the mask is a 40mm international universal interface, which is applicable to most filter and filters. The mask with filter is applicable to scenes, such as industry, agriculture, emergency, painting, welding, machining, woodworking, etc. Material: plastic colour: As shown Package Contents: 1 x full face mask 1 x 40mm mask filter 2 x carbon filter 4 x filter cotton 2 x filter covers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.