Material: Plastic Type of Photo Filter Effect: Color Correction, Enhancement About this item High-Quality Material: These lighting plastic sheets are made of high-transmittance PVC material, featuring uniform color temperature and low loss. The 0.3mm thickness provides good color saturation, is safe and durable, and is environmentally friendly and non-toxic. 11 Colors: These gel filters for lights include 7 colors: yellow, pink, purple, orange, blue, red, and green, with two pieces of each color. Different color changes provide different color effects. Photographers can create additional color effects by combining two or more filters. Various Combinations: Color filters are used for lighting effects and color correction, cumulative and subtractive color mixing, color blending, color transmission, absorption, and filtering of light with different wavelengths. Use a combination of these filters to create various effects. For Lighting: These color gel filters are suitable for film, TV, video, photo, stage, theater, DJ lighting, and decoration. (Ensure the light source is cool; color filters can deform easily at high temperatures). Multi-functional Filter Sheets: You can place transparent gel filters on paper to help children reduce reading frustration, improve clarity, and control eye movements. They also serve as art protection for memory albums, scrapbooks, and other artworks.