> Francis
> Thank you. The pollution in Bangalore and for that matter in India is
> multiple times more than say Singapore (I am assuming that is where
> you live). I cannot even dare to guess a number for the multiple here.
> Especially the COx and NOx from the exhaust of the vehicles. You got
> to experience to believe it. So if you are aiming at this market, it
> is worthwhile to develop a DAC Cloth filter. And the other thing is a
> velcro strap. Believe me it is so much easier with the velcro strap,
> especially to get the tension right especially considering that the
> tension is the core aspect of getting the one way valve effect right
> with TOTOBOBO.

> BTW I could not track the package using the tracking number given to
> me, after the package left Singapore. Pretty much the Singapore post
> office website does not have a visibility into the package once it
> leaves Singapore. So if the cost permits I would urge rather you use
> Fedex or UPS.

> Cheers
> Nagaraj

> On Nov 4, 7:30 pm, totobobo <totobobom...@gmail.com> wrote:

> > Wow, this is great stuff, Nagaraj. Your review is one of the best in
> > terms of objectivity and practical consideration. Cyclist review for
> > cyclist.

> > Rajat point out a good point: breathing pattern. In the case of
> > TOTOBOBO, the preferred pattern is 2 (Mouth in-Nose out). The TOTOBOBO
> > filter is much more efficient to filter out fine particulates than our
> > nose :-) Breathe in with the mouth is less resistance and opening the
> > mouth further improve the face seal- it gives a bigger margin for the
> > strap tolerance to achieve the one-way-valve effect as you describe
> > here:

> > > > > "if you wear the mask tight enough (but not too tight) so that the pressure built
> > > > > up in the mask from your exhaust pushes the mask out just enough from
> > > > > the skin so that the exhaust escapes out and hence water vapour (and
> > > > > hence condensation) does not build up inside the mask.

> > This is a patented feature, it is not obvious until you use it several
> > time to adjust the strap to the right tension. I am glad that you
> > discover this feature by yourself.

> > Regarding your question:
> > - TOTOBOBO filter currently don't have an active carbon version. Is it
> > worth to develop one?
> > - "turning dark" is a signal to change filter- the filter won't change
> > color by itself, turning dark is a pretty solid indication that it has
> > done it's job. (refer to this comparison between a coach and a plane)http://totobobo.com/blog/?p=164

> > Now if I may make a summary of your observation, the important
> > considerations are:

> > FILTER
> >   - does it cut-out CO?
> >   - effectiveness
> > FACE SEAL
> > COMFORT
> >   - ease of breathing
> >   - does it gets condensation?
> >   - light weight
> > EASE OF USE
> >   - velco easier than strap
> >   - ease of cleaning (for reuse)
> > COST
> >   - cost of mask (one time cost)
> >   - cost of filter (consumable cost)
> > AVAILABILITY

> > I don't know if you can list these consideration according to their
> > priority ? Anyone want to give it a go?

> > Francis