HBFULLCARE gas mask is soft lightweight facepiece with easy-to-adjust head straps for a customized fit. The sealing edge is made from food-grade elastic silicone gum, which fits the face well, provides you with a comfortable wearing feeling. Gas mask strap belt can be adjusted to fit most head sizes, designed for tight and comfortable wearing.Mask is composed of the body of mask, the cartridge, Inhale and exhale valves, headbands.The respiratorcan be disassembled, cleaned, and reused. It adopts a double filtration system that can effectively obstruct 95% of organic vapor/gas, smoke, pollen, dust, and other particles in the air. It is the ideal respiratory protective device for your life and work.