i would like to try my inflatable cabrinah co2 11,5 this winter, but i`m affraid what`s gonna happen in low temperatures, any idea, do they brake etc, in how low temperatures are they useable atall
keep flying

just don't, not unless you want to tear it apart, bladders aren't fun and temp affects them badly

I've used my inflatable on the snow last winter many times. No problem with it. A foilkite may be nice on the snow, but I think the advantages don't outweigh the cost. Also it's good to be able to sheet in and out, but that's also possible with the newest foil kites.
Look on http://www.kitesnowboard.com for practical info regarding the use of inflatables on the snow.

inflatable on snow!!!!!
crazy!!!!
forget!!!!