What is an alternative to foam drinking cups?

My job has been using foam cups for a while now and we would realy like to switch to a environmentally safe material. I am not sure where to start with this because the catalog that we get our products from does not list if the materials used are eco friendly or biodegrable or not. I did find a cup in here that is listed as double polycoated paper. Does anyone know if this is a safe alternative. Thanks in advance.