The five-point fixed adjustable headband can be adjusted to the appropriate tightness and fit firmly. The larger inhalation port provides the required air in a timely manner without pressure and with small inhalation resistance. Convenient communication, voice diaphragm design allows for both work and communication. The mouth and nose mask is made of silicone material, which is soft, comfortable, odorless, and fits the face well. The mesh fixed headband effectively relieves wearing pressure, and is not easy to get tired after wearing for a long time. The mesh headband has good air permeability and is not stuffy. The wide screen has a large field of view, a wide field of view, and a high-performance polycarbonate . Precautions: Filter-type gas mask Does not provide oxygen Please do not use in an environment where the oxygen concentration is less than 20% Please do not use in an environment where the concentration of gases exceeds 0.1% Please do not use in a closed environment Please do not use in an environment other than the protected object Refuse pollution, from poisonous gas Gas mask Six core upgrades: dust and gas prevention, double-layer filtration, quality assurance, comfortable wearing, five-point fixation, wide field of vision Refuse pollution, from poisonous gas, buy it for anti- and dust prevention Multiple protection, operation, choose different types of filters according to your needs to achieve different protection requirements (please contact customer service for details) Product name: Gas mask Wearing method: head-mounted Mask field of vision: total field of vision: 70% binocular: 55% bottom: 35% Lens transmittance: equal 89 Product function: protection against industrial ring dam pollutants such as painting, grinding, electric welding, etc., such as formaldehyde homologous organic gases, etc. Style: Head-mounted Mask style: Full-face Application range: and harmful gases Color: As Shown Material: Microfiber Package Contents: 1 * gas mask 1 * gas filter canister 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.