A photographic flash is a small, intense source of light that produces very harsh shadows If the photographer can enlarge the light source, it will be a significant improvement over direct flash.
This soft box/diffuser can enlarges and diffuses the light with the flash in the direct flash position to soften shadows and eliminate unpleasant red eye, meanwhile, it does not block either exposure sensors or auto focus assist beams on most flashes.
This sof box can be adjusted to fit your flash, it can fit most of the flashes. Foldable, easy to carry with.