I just used a Disney World.
I am happy with the Rome wheel bag. I have shipped a 29" wheel unicycle. To make it easier to put the wheel in the bag, I put a ‘tie down’ strap around flattened tire to hold it compressed. The strap may not be necessary. I liked that it allowed me to easily put the wheel well into the case, so that it didn’t pressing on the zipper. I was worried that the tire pressing against the zipper could possibly cause it to split open.
The rome bag was available on ebay for ~$30.00, plus shipping.