Add a pop of color or subtle effects to your photos with the FlexiGels for the FJ400 Strobe from Westcott, an 8-pack of silicone rubber color gels that slide over the strobe's glass dome. Durable and heat-resistant, the filters remain secured without tape or clips and work well with a variety of light modifiers. The included colors are red, orange, light orange (similar to CTO), yellow, green, blue, purple, and pink. FlexiGels are also compatible with third-party strobes that have a 2" height x 3.4" diameter glass dome and adequate ventilation hole alignment.