Thank you! The Baggu is exactly what I had in mind!You can try a Longchamp! I know that's a favorite for people protecting their Hermes on flights. Also, Baggu is a great company that has TONS of bags in different colors. The standard size is $9, and the biggest is $12. They can both carry up to 50lbs in weight, plus they fold up very small. I think the 35 would fit in both, but maybe the larger size would be better so it can completely wrap up your speedy. Here's an idea of how big it is:
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And how it folds up:
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