Flash Disc Round Diffuser 30CM
For soft lighting while on-the-go you can easily take the Flash Disc Portable Speedlight Softbox . The softbox measures about 12″ in diameter and uses silver lining in order to more efficiently direct light. It works with most shoe-mounted flash units and uses an elastic band on the base to hold it secure. Also, it has a patch on the face that will prevent hot spots from the speedlight.
For additional functionality while shooting, the reverse side of the Flash Dish features a gray card with white, 18% gray and black panels for simpler color correction in post. And, for convenience, it folds down to about 4″ and packs into an included carrying case.