Originally Posted by alpinevt
True, Louis Garneau is Canadian- I am not sure where they make their suits though? Could be in Canada. They are big in bike wear which uses similar technology.
Never heard of JIRI - they seem to be made in Czech. I also found some other companies like NES, Pietro Vitalini, Sportful, Don Quiet, Jonathan Fletcher and TheLimit- all European made. No doubt China can make these suits as they have proven thay can make almost anything- even K2 skis--- but the market is just too small.
Pehaps its too small, but if you were to offer a product that is just as good as the leading brands at several hundred dollars less and do the right kind of marketing...something tells me that you would pretty much own the market, thus making it worthwhile.
Here is something from skiracing on the porosity test: "The FIS tests for air permeability using a heavy, square box called a plombing machine. Tom Winters, chairman of the U.S. technical delegates working group, jokingly has dubbed the machine "Monica." Says Winters, "It's nothing but a big sucking machine. We set it up before the races, and racers can submit their new suits for testing." All suits require proof of porosity, and when the suits are cleared, a "plomb" (a metal, numbered disc) is affixed to the suit behind the ankle. Some new suits, right out of the box, will not pass the plomb test. In those cases, Winters says, racers put them on and "stretch the sâ€”- out of them." Winters also notes that "others are as porous as flannel nightgowns." "http://www.skiracing.com/features/ne.../newsArticles/
Without knowing exactly how the test is conducted I am guessing a section of fabric is blocked off, set up on a jig air is sucked through where by the vacuum chamber has a pressure meter that they can measure the Hg displacement to then corrolate to the porosity. Not a hard thing to do, in fact you can do it at home with a vacuum cleaner and maybe $50 worth of supplies.