Color Temperature Orange Gels: CTO gel sheet for warming up daylight balanced sources like strobe, led, flash lights. Each CTO gels will simulate different strength of “warm sunset-quality” in whichever lights..Premium Transmission Material：This Color Correction Gels are made of smooth and flat polyester film. Not easy to fade, Stable color temperature and low light loss..Cut as you want: Large Gels filter can be cut or shaped to fit with various light. Use in film, theater, video, studio and outdoor photo, stage, holiday party, and DJ lighting, etc..Package Content: (15.7x19.6inches/ 40x50cm) 4 x 1/2 CTO.Warm tips: Please cold down the light source after a long time use, or it may melt. Use a proper gel holder, or tape the gel to the edges of the barn doors, away from the lamp.