The association used to have different names in the different Swiss languages. At that time, it was called IG Velo in the German part. A year or two ago, they standardized it to be called "Pro Velo" throughout the whole country. Chris gave the link to the brief info available in English, their main page is only available in German
. There are local branches of the association all over the country
, here is the one in Baden
that was probably organizing that.