The Sidekick Duo Diffuser is an essential accessory if using your Light & Motion Sidekick as fill-light or for close-up imagery. By softening and spreading the sidekicks bright beam a subject isnt washed out from the light. Secure press-on design firmly mounts on the Sidekick body yet can be installed/removed rapidly. Compatible only with Light & Motion Sidekick duo light, will not fit the Sidekick Flood model.