Hello, I just simulated a customer: I did not log in, but added some products to my cart. Then I tried to change the material I wanted to order it in, but it did not work. That means, that I can choose a material in the cart menu, but the site does not change it. When you use the Lab-feature of adding sets you are dependent on beeing able to change the material in your cart, because a customer could like a material better than the default one. It is also impossible to get back to your cart "settings" once you proceeded through login in the payment process. -> There is no chance to change, when you had not been logged on. It would be great if you fixed it rapidly Yours, Marie PS: This problem appears no matter if you add sets or usual products, but always when you are not logged on. I tested it several times and always reset my browser before doing so.