Quality : These gel filters 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 gel light filters in , enough for using. Size: 11.7 x 8.3inches / 29.7 x 21cm (L x W). Note: do not leave the product to the light which is on, or it will be melted. Combined to Use & Creat Effects: these gel filters 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 Gel Filter is pfrfect for photo studio strobe flash light LED lights, film, video, theater, party, and DJ lighting. Or used for memory albums and 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 gel light filters, easy to off. tear off the films use. 't worry about being scratched, easy to remove . Colour:blue :plastic Package Contents: 9 x Gel light filters Only the above package content, other products 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.