Air supply sealing full mask, anti-fog lens with higher transparency >90%,impact resistant, no sense of vertigo, light ... is made of silica gel complex material, anti-fog lens with higher transparency >90% and impact resistant, no sense of vertigo ... points.It should be uesd together with PRF101, PRF-102R or PRF-103 respirator.When using with PRF-103, it can be used ...