Quality Material: These gel filters are made of high light transmission plastic and can be used as flash filters. Lightweight, high toughness, stable color temperature, low loss. Perfect for placing over outdoor lights, LED garage flood lights, Christmas lights, and Halloween decorations. Quantity: 9 pieces of gel light filters in total, sufficient for various uses. Size: 11.7 x 8.3 inches / 29.7 x 21 cm (L x W). Note: Do not leave the product close to an active light source, as it may melt. Combined Use & Create Amazing Effects: These gel filters can be combined to create different lighting effects, such as cooling effects or color correction. Ideal for additive and subtractive color mixing, absorption, and filtering of different wavelengths of light. Wide Applications: The lighting gel filter is suitable for photo studio strobe lights, flash lights, LED lights, film, video, theater, party, and DJ lighting. Can also be used for memory albums and other art projects. May assist children in reducing visual stress during reading and improving visual clarity and eye movement control. Two-sided Protective Film: Protective films are applied on both sides of the gel filters and are easy to peel off before use. Helps prevent scratches during storage and handling. Color: Blue Material: Plastic Package Contents: 9 x Gel Light Filters Only the above package content is included; other items are not part of this package. Note: Light reflection and differences in display screens may cause slight variations between the color shown in the image and the actual product. Measurement error allowance is +/- 1-3 cm.