Pack of 2 Respro Techno mask filters.

The Techno filter combines the Sportsta mask's Hepa-Type filtration for sub-micron pollutants with the City mask's Dynamic ACC (Activated Charcoal Cloth) filter.
This combination provides increased filtration ability covering a broader spectrum of pollutants than either filter on its own, and places the Techno at
the top of the range in performance.

The Techno Filter combines the sub-micron performance of the Sports filter with the dynamic adsorption capacity of the City filter.
Fits any Respro cycling mask for the maximum anti-pollution protection levels.
Definately the choice for urban cyclists and anyone who spends a lot of time in traffic.

Filter should be changed roughly once a month if used for an hour a day.