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, and low loss. Perfect for placing over outdoor lights or modifying 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 cool tones and 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 flashes, LED lights, film, video, theater, party, and DJ lighting. Can also be used for memory albums and other art projects. May assist in improving visual clarity and eye movement control for some children during reading tasks. Two-sided Protective Film: Protective films are applied on both sides of the gel filters for scratch protection. Easy to peel off before use. Color: Blue Material: Plastic Package Contents: 9 x Gel Light Filters Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement allows an error of +/- 1-3 cm.