Polaroid Mini Universal Studio Soft Box Flash Diffuser for Canon EOS, Nikon, Olympus, Pentax, Panasonic, Sony, Sigma, & Other External Flash Units (3.5" x 3.5" Screen) Held in Place with Built-in Elastic Band, Attaches In seconds &lt;&gt; One size fits all Creates Soft, Diffused Light &lt;&gt; Silver interior lining that increases contrast Softens Shadows Use without the diffuser front for a bare bulb effect Folds flat to conveniently fit in your gear bag