Capcom and Estate have teamed up to offer Street Fighter fans a little Comic-Con treat: these lovely "Hadouken" fitted caps, which will be available only to people stopping by the San Diego Convention Center this weekend.
Be quick, though; there's only 80 of them available (40 in each colour) at $45 a pop, which for a cap of such a limited run isn't too bad a price. If you're in the area, you can find them at the Capcom booth.