Quality Material: These are made of high light transmission plastic, can be used as a flash filter. Light weight, high toughness, stable color temperature, low loss. Perfect for placing over outdoor lights, or transforming regular LED garage lights to Christmas lights, decorations.: 9 pieces of light in , enough for using. Size: 11.7 x 8.3inches / 29.7 x 21cm (L x W). Note: please do not leave the product to the light which is on, or it will be melted.Combined to Use & Creat Effects: these can be combined to create different effects, such as, cool effects, color correcting. Or for color correction, involving additive and subtractive color, color mixing, color transmission, absorption and filtering of the different wavelengths of light.Wide Applications: The Lighting Filter is pfrfect for photo studio strobe flash light LED lights, film, video, theater, party, and DJ lighting. Or used for memory albums and various other art projects.It can also help children reduce frustration in reading, and eye movements control.Two-sided Protective Film: There are protective films on both sides of the correction light , easy to off. Please tear off the films use. ' worry about being scratched, easy to remove .Colour:blueMaterial:plasticPackage Contents:9 x lightOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.