Description If you are looking for gel sheets, then your research is here. That's because our products can meet your needs. It is made of sturdy PVC materials and craftsmanship, practical and durable for a long using.Can be used for color mixing, color transmission, absorb and filter different wavelengths of light. Features -Color:As Shown -Material:PVC -Size:30.00X21.00X0.30cm/11.79X8.25X0.12in - Made of durable and safe material for a long time and durable use. Lightweight and portable, it is very convenient for you to carry. - You will have a good use experience because of the perfect workmanship of this product. - It is simple in design, but it's practical to use, which will give you a good use experience. - Can be used for color mixing, color transmission, absorb and filter different wavelengths of light. - Also can help kids reduce reading frustration, and improve clarity and eye movement control. Package list: 8 x PVC sheets