- A good value affordable mask to provide city cyclists with basic filtration against pollution
- Uses an activated carbon filter to screen out urban pollution
- Comes in two sizes, and is easily and quickly adjustable for a comfortable fit with a Velcro closure
- Made from hypo-allergenic Neoprene giving a comfortable and secure fit
- The filter is replaceable, and is designed to remain effective for 1 month of normal use in urban conditions
