The Vello Light Shapers for Portable Flash is a 4 x 7.5" two-sided bounce card, matte black on one side and reflective white on the other. The white side can be used as a bounce card, to bounce and scatter the light output of the flash. The black side can be used as a flag to keep light from flaring into your lens when using a flash as a background or hair light. Touch-tab fasteners are included for attaching it to your on-camera flash. Two Light Shapers can also act as a set of barndoors.