This unit was used exclusively in high humidity environment in combination with masks. In the past, even ESS goggles that claim to have "anti-fog" features would fog partially to near completely during heavy exertion in a humid environment. This turbo-fan unit solves that problem completely. No more fogging at humidity level up to near 80%. We have not used it at humidity above 80% yet, that will happen soon.
THe unit is rugged and has been dropped, kicked and crashed into branches and accidental brush against rocks. It is good at keeping out fine dusts while it is running. While not running, some fine dust can enter through the fan opening and collect around the nose guard. During routine maintenance, we vacuum the entire interior to clean off deposits.
A really useful tool that makes focusing on our work that much easier.
Pros: Solves my problems perfectly
Cons: None
This review was written in the old system and had content requirements that are different than reviews written today.