In general, people in Switzerland dress casually. However in large cities such as Geneva and Zurich, it’s almost impossible to dress too nicely. If you’re heading to a larger city, be sure to have at least one classy outfit in your wardrobe. The Swiss consider black and darker colored fabrics to be stylish. Just like the style guide for France, when in doubt, wear black. A dressy outfit or two is nice to have in case you go out to dinner or go to a concert.