I bought a trolley shopping bag and discarded the nasty bag. Then I made a nice zippered case which is padded and has a variety of pockets to fit on the trolley. It works quite well. The trolly does not fold, but it fits snugly in front of the passenger seat so the machine travels like a queen. I can even fit some fabrics, notions, and my iron into the case. Reading about all the features of other cases, I see I need to add a safety belt on the inside to strap in the machine, but it only goes to and from class for now, so maybe it is not really necessary.