Neewer 37"/94cm Studio Fold-up Collapsible White Softbox Umbrella for Flash AD180 AD360 AD-S5 39" Folding White Diffuser Photo Soft Umbrella for Flash /Studio Strobe. Widely used with studio strobe, flash, specially for Godox WITSTRO flash AD18/AD36. Unfolds quickly for use and takes up little space, and carries easily Works well to diffuse the light from any flash creating a soft even light for your subject Attaches easily to the flash and creates a very large source of soft illumination