Our 4008 include 5 sheets of a tough diffusion material (shown here with one of our MI-005 (Gel Gaskets). Use each sheet separately or double them up for an extra soft light. This is great for when the Novatron flash heads and Monolights produce an illumination that is a little too sharp for the effect that you are trying to create. The diffusion material scatters the light in an even manner. These durable vinyl sheets are moderately heat resistant. So, please carefully monitor them when used over extended periods of time with our higher wattage lamps.