I ride my bike every­day to work and back. It’s great! Stock­holm is adapted for bikes and there isn’t much cars com­pared to other cities. But even though they are few com­pared to most other major cities, they bug me as a cyclist. I grew up in Visby, where there hardly is any traf­fic at all (with the summer as an excep­tion). The air in Stock­holm is quite dense and smells ter­ri­ble of exhaust gases. This is espe­cially true if you ride your bike amongst them, as I do. So as a little exper­i­ment I will wear this res­pi­ra­tor as a pro­tec­tion against the dust, the par­ti­cles and the exhaust gases.

At the end of this week (after three days of com­mut­ing) I will com­pare the images of the mask.
Sounds like fun? Please KOPIMI, and do this yourself!