filters (CE labeled) have a dust cleaning action (0.1 micron) but they
offer no protection against the breathing in of toxic gases. Our
have an excellent preventive action in different sports activities. The
choice will depend on the environment. They eventually can be put in the
nose without filters and then slightly 'clicked' forward, by wich the
nose cavities are enlarged and the oxygen intake is raised remarkably.
push the Better Breather(tm) into both orifices and against the