I recently got my silk foils and need to pack them for travel. Obviously the one piece design isn't ideal for travel and I found they won't fit into my board bag. I ordered many different bags off of Amazon to see what fit the best. Most of them were for art supplies (easels) but I found this one fit the best without being overly huge (size XL). The easel bags were too large and the added space wasn't very functional.
DoYiKe Extra Large Storage Duffle Bag with Zippers and Handles, Big Foldable Duffle Bag for Travel-38x23x11Inch
a.co/d/7SKhQKsPros: it's light, inexpensive and fits the foils, a wing or other gear without being overly huge. cons: it's very basic, not padded, questionable durability.
should do the trick with minimal investment.
I actually looked into crossbow bags which are perfect shape and padded but the span wasn't big enough. Cornhole bags weren't quite wide enough.