Opteka SB-15 AF-Compatible 7" X 5" Universal Softbox Diffuser for Camera Flashes Provides soft, even flash illumination One size fits all. Attaches with the velcro adhesive tabs or optional CL-2 clinch band Unique design does not block AF and metering sensors on the flash unit Folds down flat for easy storage and portability 7" X 5" Front screen