fer to purple or blue normally which indicating the strength of the UV index. Wearing it on the wrist is a good way to acustom key lanyardvoid long time staying under strong sunshine. We add UV powder which is also green as silicone in production. The UV powder is kind of photochromic material. We use it to make this change. Photoreceptor color is irradiated by ultraviolet or sunlight, absorbs ultraviolet or sunlight, and produces changes in color. When it loses ultraviolet or sunlight, it returns to the original color. Photoreceptor products, after sunlight or ultraviolet radiation, can absorb the energy of the sun or ultraviolet rays, produce changes in the molecular structure, lead to changes in the absorption wavelength, and produce color changes; when the sun or ultraviolet energy is lost, the original molecular structure is restored and the color of the cost is reduced. Application of photosensitive discoloration material: coating, suitable for various surface coating products, including PMMA spray paint, ABS spray paint, PVC spray paint. Ink, printing of various materials, including fabric, paper, synthetic film, glass, etc. Plastic products, suitable for various kinds of plastic PP, PVC, ABS, silicone rubber and other materials, such as the ejection, out of shape. custom-camo-silicone-custom key lanyardwristbandscool-silicone-wristbands Gucci is an Italian palace fashion brand. Gucci Group is the most famous luxury group in the world. It manages high-end luxury goods such as men and women fashion, perfume, bags, leather shoes, shoes, watches, home accessories, pet products, and so on. Gucci group It is famous for its high-end, luxurious and sexy. We can make a custom silicone wristband with the Gucci logo. Since it is a bold and simple logo with letters only, it is available for all logo styles, like printed, debossed, embossed, colorfilled, embossed printed. We can add our slogan together with the Gucci logo on the wristband, like 100years anniversary. It is good item for business promotional event. Wearing the wristband on the hand with your message, people who attend the conference will know exactly the theme. Custom wristband contribute to promotional gifts, party favors, corporate trade shows, organizations, political campaigning and charitable causes.