I made them from a vintage maxi skirt late at night. (Maybe that's obvious!) The pattern is the bottom half of a jumpsuit pattern, and its a lovely shape, so soon I think I will make it up. Only in the land of derby can I delight in dress-ups!
And now because I have *confession* already got 12 pairs of roller derby shorts, I'm going to list them on my Etsy store to see what the universe says.