If you have read the other thread you pretty much know what people think of these. I just say the BioLogic mask today and was thinking of starting a thread about it. I don't know if the 'other' thread has been updated to include it. I would be interested in finding out how much the BioLogic costs. My guess is someone thinks they are smarter than the average bear and are getting standard 3M Organic Solvent respirators (~$15) and is going to repurpose them with the attendant markup. The smaller masks might be restrictive but the big one is not likely to be.

Unlike recreational cyclists a commuter can really rack up serious exposure time in rush hour traffic. Depending on locale this can have long term health consequences. I think more of us should be wearing some kind of mask.

H