Creative Light 100808 40x40 cm/1.3x1.3 Feet FF Softbox (Black) Removable interior diffuser, as well as an external diffuser Reinforced stitching, ensuring no light is lost through the seams Flexible steel rods rather than aluminum or fiberglass Rods are color coded to make assembly simple. Just match the color with the appropriate color-coded hole on the Creative Light Speed ring Heat-resistant fabric is perfect with flash units of any power, or continuous lighting up to 500 watts.