For the Profoto C1 Plus, A1X & A1, Stack with Other Gels & Play with Color, Stackable with Light-Shaping Tools, Snaps on & off via Magnetic Mount. Designed for their C1 Plus A1X and A1 the Clic Gel in half plus green from Profoto adds color to your images for fun and creative effects and also shapes light to create distinct looks. This specific gel is used primarily to naturally balance the created light with ambient light such as fluorescent lighting. It easily attaches and detaches using a built-in magnetic mount and can be stacked with other gels to create additional colors. Or stack it with other compatible light-shaping tools for further innovative possibilities.