They're a midweight cotton/poly blend.
Originally Posted by gekko422
I would try washing them in cold on the delicate cycle and letting them soak with some nature's miracle for a bit and then hanging them to dry. You might have to iron (ick) them after to make them look decent again.
I haven't got the slightest idea how to change people, but I still keep a long list of prospective candidates just in case I should ever figure it out.