I had been looking for a decent case for my Sylphyo for some time and couldn't find anything available specifically for the instrument.
So I broadened my search and came up with this:
I just got it delivered and the Sylphyo fits it perfectly! Nice pattern on the outside, quilted fabric inside. I purchased it from a store called Lark in the Morning - here's the link:
This bag was meant originally for Native American Flutes, but the Medium size fits the Sylphyo perfectly.
(I have no affiliation to the company, etc... :)