1.Contain a KN95/N95/FFP2 mask+ goggle+air filter
2.Fresh and cool air pass 99.9% filter and pump into mask and goggles, safer use
3.Keep air flow on mouth and nose, avoid stuffiness, suitable for longtime use
4.Make goggles clearer vision, eyes dry,no water condensation for 8 hours. If any gap, clean air flow goes out so that keep safer environment and comfortable for long time working