One should not suggest that the FheitSA a specific purpose pursued namely working with dust and liquid CHEMICALS. That's why she has a Acetate and is unventilated. The Acetate erfülllt only protection class F. Who wants to use them for home improvement with saw and hammer drill, should rather resort to another model. Even cheap goggles from the hardware store for 2 euros have glasses with the higher protection class B. glasses of protection class F only protect against particles with low energy.
As a result, is a point deduction for the poor fit and a fragile for the disc.