Polaroid Universal Collapsible Circular Cone (Trumpet) Studio Softbox For Canon EOS, Nikon, Olympus, Pentax, Sony, Sigma, & Other External Flash Units Provides Soft Light Which Reduces Harsh Shadows And Hot Spots One Size Fits All. Attached With The Included Clinch Band Folds Down Flat For Easy Storage And Portability Dimensions: 11" x 9" (WxH)