A 18 Pack Colored Overlays Transparency Color Film Plastic Sheets Correction Gel Light Filter Sheet Material: Made of highlight transmission material with lightweight steady color temperature and low loss. Durable Specification: 9 Colors: Orange, Yellow, Red, Pink, Blue, Purple, Neon Yellow, Green, Rose Dimension: 7.8 x 7.8 in/ 20cm x 20cm Application: Used for lightening effects and color correction, involving additive and subtractive color, color mixing, color transmission, absorption and filtering of the different wavelengths of light Used in film, video, photo, stage, theater, party, and DJ lightening Great for memory albums scrapbooks and various other art projects Packing including: 18 * Gel light filters (each color for 2 pieces) Note: Keep away from Fire Be careful of cut hands. Not suitable for child under 3 years old.