Fluorescent dye is used. Since a feature of fluorescent dye, there are possibilities to change colors with situations such as outdoor with strong sunlight hit, fluorescent lights hit to the same place for a long time. Depending on the specifications of your PC, the product color may look slightly different. Thank you for your understanding.
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Although I bought green, the image color on the personal computer is green, but the actual product is yellow green fluorescence. Privately, it says "depending on the environment of the PC", but I think that there is too much difference between the image and the actual color.
I use it as a working cap. Previously, the same shape, design and price were used. The material is firmer than the previous one, even with the same free size a little big, there is no sense of pressure. I think that it is better if there is a setting of even larger size.