Opteka SB-5 Medium Universal Studio Soft Box Flash Diffuser for External Flash Units - 8 X 6 Inches Screen Provides soft even flash illumination One size fits all. Can be attached with the included velcro tabs or optional Opteka CL-1 clinch band (sold separately). Folds down flat for easy storage and portability Dimensions: 8" X 6" (WXH) 1 Year Opteka Warranty