Function: Anti-PM2.5
Material: Silicone
Breathing valve device: Yes
Product use: suitable for the protection industry of dust generated during construction, quarry, textile, grinding, metal casting, material handling and grinding operations
Double filter structure, large and smooth air inlet valve and low breathing resistance
Four-point design, dual-head system, stable wearing
Upgraded silicone cover, environmentally friendly, non-toxic, comfortable veneer