3D split vault skeleton, even breathing even if you exercise
Large diameter cold flow breathing valve for smoother air circulation
Ultra-thin silicone valve, sensitive rebound, high airtightness
High-efficiency filtration of 5-layer filter material, environmentally-friendly polyurethane sponge material, preliminary filtration of large particle impurities such as pollen
PM0.3 protection. The mask uses disposable air-filter cartridges, which has an effective particle capture efficiency of up to 98 percent. It can protect users from Virus