The Impact 7ft Parabolic Umbrella Diffuser is a translucent light modifier that fits over the parabolic umbrella and converts it into a large softbox with just a 1/2 stop of output power. The resulting soft, flattering light quality works well for portrait, group shots or any subject that needs open shadows and low contrast. The diffuser is compatible with the 7ft silver, white and clear versions of the shade (Impact# UP-7S, UP-7WB, U-P7T) recycling your parabolic umbrella. Turn your existing 7ft umbrella into a large softbox. Easy installation. Turn your reflector umbrellas into a large softbox is easy and takes only seconds, a carry bag for storage and transport. Size: Open diameter: 2.1 m. Weight: 0.22 kg.